418 results about "Thermal conditioning" patented technology

The invention relates to the field of functional master batch materials, in particular to a phase-change energy temperature-adjusting fiber master batch and a fat-burning fabric thereof. The phase-change energy temperature-regulating fiber master batch is prepared from a composite phase-change material and polyethylene glycol terephthalate slices through melt extrusion and granulation, the fat-burning fabric is prepared from the phase-change energy temperature-adjusting fiber master batch and polyethylene glycol terephthalate slices through melt spinning, network compounding and weaving processing. By introducing the microencapsulated phase-change material and the high-thermal-conductivity filler, in the melt extrusion process, the microencapsulated phase-change material and the high-thermal-conductivity filler can be uniformly dispersed in the matrix material to form stable fiber master batches, form an efficient thermal-conductivity structure and provide excellent thermal regulation performance; meanwhile, microencapsulation can improve the stability and dispersity of the phase-change material, and the fat-burning fabric is prepared through melt spinning and weaving of fiber master batches, so that the heat-conducting property of the product is improved, and the continuous fat-burning effect is achieved.

The invention relates to the technical field of industrial equipment temperature control, and discloses a temperature control system, which comprises a multi-source state sensing module for acquiring a power load, temperature, humidity and feedback temperature; the feed-forward prediction and analysis module is used for generating a feed-forward signal based on the load and the temperature; the closed-loop feedback and safety guarantee module is used for calculating a feedback signal according to the temperature deviation; the cooperative control decision module combines the feed-forward signal and the feedback signal to generate a fan instruction, and generates a baffle instruction for balancing heat dissipation and regeneration according to the feed-forward signal and humidity; the self-adaptive heat dissipation execution module is used for executing a fan instruction to generate cooling airflow; and the dynamic energy regeneration module executes a baffle instruction to distribute the waste gas flow direction. According to the method, the power load is introduced to serve as a prospective index, correction is conducted in combination with the environment temperature, a predictive heat dissipation control model is constructed, the system can start heat dissipation adjustment before a large amount of heat is generated, and therefore smooth and stable control over the equipment temperature is achieved.

The invention provides an aerogel-based heat-preservation, heat-insulation and waterproof composite coating material for a building outer wall and a preparation method thereof, and belongs to the field of building materials. Through hydrophobic modified silicon dioxide aerogel, a lightweight heat insulation frame is provided, and the waterproofness and compatibility are improved; the mechanical property and the crack resistance are enhanced through the modified potassium titanate nanofibers, and self-adaptive heat insulation is achieved; the thermoelectric effect, the wear resistance and the thermal regulation performance are optimized through plasma treatment and polyaniline coated tungsten carbide nanoparticles; the heat management performance, the crack resistance and the comprehensive heat insulation and waterproof capacity are improved through graphene oxide composite modified boron nitride; the flexibility, the hydrophobicity and the interfacial compatibility are improved through organic silicon modified bisphenol A epoxy resin; and the performance of the coating is optimized through the synergistic effect of the components.

A thermal system for providing thermal conditioning to a facility includes a facility air circuit for circulating a facility air throughout the facility and a downhole fluid circuit for circulating a downhole fluid. The facility air circuit is thermally connected to a heat pump for exchanging heat with the facility air. The downhole fluid circuit includes the heat pump for exchanging heat with the downhole fluid, a main loop, including a borehole heat exchanger (BHE) for exchanging heat between the downhole fluid and a geological formation, and an exhaust loop including an exhaust heat exchanger coupled to an exhaust of the facility air circuit, wherein the exhaust loop is configured to circulate at least some of the downhole fluid through the exhaust heat exchanger to exchange heat between the downhole fluid and an exhaust flow of the facility air exhausted from the facility at the exhaust.

Shipping container packaging has a top and bottom tray and a divider assembly including interconnected longitudinal and lateral panels and at least one thermal regulation element to form article surrounding voids or chambers. The at least one thermal regulation element includes heat transfer surfaces in direct radiant heat transfer relation to the articles. In one form, the thermal regulation element includes a refrigerant. In one form, the divider assembly includes plural thermal regulation elements. In one form, the assembly defines bottle surrounding chambers.

The invention relates to a thermal conditioning system for a motor vehicle, having: a main refrigerant fluid circulation loop including successively: a compressor, a first heat exchanger, a refrigerant fluid accumulation device, a second heat exchanger, a first bypass branch connecting a first connection point to a second connection point, a second bypass branch connecting a third connection point to a fourth connection point, a third bypass branch connecting a fifth connection point to a sixth connection point, the main loop having: a first expansion valve disposed between the first connection point and the accumulation device, a second expansion valve disposed between the fifth connection point and the second exchanger, and the third bypass branch having a third expansion valve and a third heat exchanger.

The heat management system comprises a heat pump unit for providing refrigerating capacity or heating capacity, a liquid circulation unit and a power distribution circulation unit. The liquid circulation unit comprises a liquid circulation pipeline, and a liquid pump, a cell heat exchange plate, a first tee joint, a second tee joint and a heat exchanger which are sequentially arranged on the liquid circulation pipeline. The liquid pump drives the heat adjusting medium to circulate in the liquid circulation pipeline. And the battery cell heat exchange plate exchanges heat with the battery cell. The liquid circulation pipeline forms a first passage between the first tee joint and the second tee joint. The heat exchanger exchanges heat with the heat pump unit. The power distribution circulation unit comprises a second path and a power distribution cabinet heat exchange plate arranged in the power distribution cabinet. The power distribution cabinet heat exchange plate is arranged on the second channel and comprises an input port communicated with the first tee joint and an output port communicated with the heat exchanger through a second tee joint. The first tee joint distributes the heat adjusting medium from the battery cell heat exchange plate to the second channel where the power distribution cabinet heat exchange plate is located and the first channel, and the heat adjusting medium flows to the heat exchanger through the second tee joint.

A thermal conditioning system including a heat-transfer circuit, a refrigerant circuit including successively: a compressor, a first bi-fluid exchanger and a second bi-fluid exchanger arranged jointly on the refrigerant circuit and on a main loop of the heat-transfer circuit, a first expansion valve, a third bi-fluid exchanger arranged jointly on the refrigerant circuit and on a secondary loop of the heat-transfer circuit, a first branch of the heat-transfer circuit being configured so that the heat-transfer liquid leaving the first bi-fluid exchanger returns to the first bi-fluid exchanger without passing through the second bi-fluid exchanger, and including a second heat exchanger configured to exchange with a second air flow. A second branch connects the first branch to the main loop, and includes a third heat exchanger configured to exchange with the second air flow.

The embodiment of the invention discloses a peak regulation method, device and equipment for a cogeneration unit and a storage medium, and relates to the technical field of electric power, and the method comprises the steps: determining the heat user demand heat of a preset region in a current unit time length based on the heat supply scene information of heat users in the preset region and a predicted outdoor temperature sequence of the preset region in the current unit time length, based on heat supply network heat supply steam information extracted from the combined heat and power generation unit by a heat supply network heat supply system in the preset area in the current unit time, heat source heat supply heat of the preset area in the current unit time is determined; the supply and demand deviation is determined according to the heat user demand heat and the heat source heat supply heat, and when the supply and demand deviation is larger than a set deviation threshold value, a heat storage adjusting valve is opened to start a heat storage mode of the heat supply network heat supply system, and when the heat user demand heat is larger than the heat source heat supply heat, heat stored by the heat supply network heat supply system in the heat storage mode is used for heat supply. And the peak regulation flexibility of the cogeneration unit is improved in a peak load shifting manner.

A gas turbine engine includes a compressor, a turbine, and a rotational assembly. The compressor and the turbine form a core flow path. The rotational assembly includes a shaft, a compressor rotor, and a turbine rotor. The shaft interconnects the compressor rotor and the turbine rotor. The compressor rotor includes bladed rotor disks. The bladed rotor disks are spaced from the shaft to form an unobstructed passage. The bladed rotor disks form at least one forward rotor cavity and at least one aft cavity. The at least one forward rotor cavity and the at least one aft rotor cavity are connected in fluid communication by the unobstructed passage. The rotational assembly forms a thermal conditioning assembly. The thermal conditioning assembly includes air apertures formed by at least one of the bladed rotor disks. The air apertures extend from the core flow path to the at least one aft rotor cavity.

A method for producing containers from preforms. In example embodiments, the containers can have different formats. In example embodiments, the method includes thermal conditioning of a preform made of a thermoplastic material, moulding by blow-moulding or stretch blow-moulding of the container by means of a unit for forming containers, and calibration. The calibration includes providing a sample preform for said format; placing, on said sample, at least two reference markers distributed along the height of said sample; thermally conditioning the sample and blow-moulding the sample in order to obtain a container according to said format; reading off the position of the reference markers on said container obtained; and assigning each of the heating means to at least one of the three portions on the basis of the position of the reference markers on said container obtained. The invention also relates to a facility implementing the production method.

The invention relates to the technical field of heat supply engineering, and discloses an intelligent heat supply adjusting method and system for a heat exchange station, and the method comprises the steps: obtaining the operation characteristic value of the heat exchange station, and determining the operation index of the heat exchange station according to the operation characteristic value of the heat exchange station; historical operation indexes of the heat exchange station are obtained, and the operation indexes are corrected according to the historical operation indexes of the heat exchange station; predicting heat loads of the heat exchange stations according to the corrected operation indexes, and clustering the heat exchange stations according to heat load predicted values; and a flow adjusting value is determined according to the clustering result of the heat exchange station, and the valve opening degree of the heat exchange station is adjusted according to the flow adjusting value. According to the method, the load value of the heat exchange station can be accurately predicted and intelligently regulated, so that the heat supply performance of the heat exchange station meets the target heat supply requirement, and the heat supply efficiency of the heat exchange station is effectively improved.

The invention discloses an air cooling and cold air all-in-one machine performance testing device, which comprises an environment room and a testing control part, and is characterized in that a first air pipe is arranged in the environment room and is used for feeding air flow led from the interior of the environment room and / or a second air pipe into an evaporator air inlet of a tested machine after the temperature and humidity of the air flow are adjusted; the second air pipe is used for discharging airflow at an air outlet of an evaporator of the tested machine to at least one of the outside of the environment room, the inside of the environment room and the first air pipe, the third air pipe is used for discharging airflow at an air outlet of a condenser of the tested machine to at least one of the outside of the environment room and the inside of the environment room, and the test control part is used for controlling airflow at each position. The invention further discloses a working method of the air cooling and cold air cooling all-in-one machine performance testing device. The device is suitable for testing the performance of the air-cooling and cold-air-cooling all-in-one machine, the temperature between the environments is adjusted through the refrigerating capacity and the condensation heat generated in the testing process, and energy consumption is reduced.

Device for containing liquid, of the type container or circulation circuit, and methods of manufacturing this device. The invention relates to a device (1) for containing liquid, of the type container or thermal regulation circuit with heat transfer fluid, comprising at least one metal wall (2) which has openings (3, 3') for the passage of the liquid through said wall (2), a supply or discharge pipette (4, 4') being present on the external face of said wall (2), at the level of each opening (3, 3') and being connected in a hermetic manner to the opening (3, 3') concerned.Device (1) characterized in that each pipette (4, 4') is a pipette made of thermoplastic material, attached exclusively indirectly to the metal wall (2), around the relevant opening (3, 3'), through an intermediate metal piece (5), assembled directly with the outer face of said metal wall (2), and / or, through an intermediate piece or layer made of thermoplastic material (5'), attached by welding or overmolding onto the outer face (2') of said metal wall (2) or onto an intermediate metal piece (5) assembled directly with said outer face (2') of the metal wall (2). Figure to be published with the abbreviation: Fig. 5A.

The invention discloses an energy-saving generator set axial flow channel composite cooling device, which relates to the technical field of cooling devices, and comprises an air cooling mechanism, a plurality of heat dissipation mechanisms, a plurality of control mechanisms, a plurality of connecting pipes, a liquid inlet and a liquid outlet. According to the device, temperature changes are sensed in real time through the memory metal sheet, a three-stage heat dissipation adjusting mechanism is automatically triggered, the heat dissipation requirements of the generator set under low, medium and high working conditions are accurately matched, basic heat dissipation is achieved through single-tube operation at the low temperature, three-tube enhanced heat dissipation is started at the medium temperature, and five-tube full-open maximum power heat dissipation is achieved at the high temperature; a linked cooling liquid flow three-stage adjusting system is matched, so that the heat dissipation efficiency and the temperature change are synchronized in real time, energy waste caused by traditional continuous full-power heat dissipation is reduced, the problem of fatigue cracks of metal parts caused by long-term thermal stress is effectively reduced, the service life of the device is prolonged, and the service life of the device is prolonged. The dilemma problems of supercooling waste and overheating damage of a traditional heat dissipation system are fundamentally solved.

The invention relates to a thermal conditioning system (1) of a motor vehicle, which includes: - a heat-transfer fluid circuit comprising a first plate (20) forming one or more first channels (25) for the heat-transfer fluid; - a refrigerant circuit comprising a second plate (21) forming one or more second channels (26) for the refrigerant; - a plurality of components functionalising the circuits; - the first and second plates are secured to each other via an intermediate structure (22, 23) so as to form a structural support; - the intermediate structure and the first plate and / or the second plate having a plurality of openings or recesses (27) intended for the passage of ducts (28) for connecting one or the other of the first and second channels to the components; a single face of the structural support having all of the above-mentioned components.

The invention discloses a heat collection and heat removal integrated energy-saving enclosure structure and a heat collection and heat removal adjusting method thereof. In the structure, a roof subsystem comprises a roof radiation layer, a roof structure layer, a cavity located between the roof radiation layer and the roof structure layer, and a communicating device used for achieving air circulation and isolation between the indoor space and the cavity; the roof radiation layer comprises a plurality of inclined and side-by-side double-side shutter radiation units, each double-side shutter radiation unit comprises a condensation pipe, a central pipe rotationally sleeving the condensation pipe and shutter plates arranged on the two sides of the central pipe, one side of each shutter plate is provided with a sky radiation cooling material, and the other side of each shutter plate is provided with a solar heat collection material; the wall subsystem comprises a wall and evaporation pipes arranged in the wall, the upper ends of the evaporation pipes are in butt joint with the lower ends of the corresponding condensation pipes, and the evaporation pipes are used for storing heat-conducting media capable of absorbing heat and evaporating. Natural energy can be fully utilized in summer and winter to meet the cold and hot requirements, and the complexity and cost of the system are reduced.

In order to fix a rail of a rail track using a rail machine, the rail machine is moved in a working direction so that at all times a portion of the rail which is not attached to a cross-member of the rail track passes through a thermal conditioning zone of a thermal conditioning device of the rail machine, a temperature of a surface region of the portion of the rail passing through the thermal conditioning zone is modified using the thermal conditioning device by generating a non-homogeneous temperature distribution in the portion of the rail, and the portion of the rail is fixed to a cross-member of the rail track, after modification of the temperature of the surface region of the portion of the rail, without waiting for the temperature distribution in the portion of the rail to be homogenized.

An electrically operated aircraft deicing vehicle includes a chassis having longitudinally extending beams. The chassis supports a rechargeable battery system including one or more battery modules and a charging unit, front and rear axles, a positioning system for a fluid spraying system and a fluid tank system containing deicing fluid. An electric drive motor is operably coupled to the battery system. The electric drive motor is positioned aft of the front axle and between the longitudinally extending beams of the chassis. The electric drive motor is operable to rotate the front wheels. A hydraulic pump system is powered by the battery system. The hydraulic pump system is operably coupled to the positioning system enabling movement of the fluid spraying system. A heat transfer unit is positioned forward of and is operably coupled to the battery system for thermally conditioning the battery system.

The invention relates to the technical field of heat storage, in particular to a dynamic heat storage and supply regulation and control system and method based on energy efficiency optimization. According to the method, multi-source parameters such as the server load rate, the cooling return water temperature and the heat supply side return water temperature are subjected to collaborative modeling, so that instantaneous surplus heat is converted into schedulable heat storage, the heat supply side return water temperature difference is stabilized within a target interval by releasing the stored heat and adjusting the auxiliary heat source intervention proportion in a linkage mode, and the heat supply efficiency is improved. Room temperature deviation and energy efficiency deterioration caused by heat source fluctuation are avoided, and meanwhile closed-loop correction is conducted on heat charging and discharging power, the heat supply demand range and the index weight, so that the system gradually approaches the balance point of the lowest energy consumption and the optimal thermal comfort degree in long-term operation. Therefore, on the premise that the thermal comfort of a building group is guaranteed, the waste heat utilization rate is remarkably increased, the unit heat supply energy consumption is reduced, and the problems of insufficient heat supply stability and low waste heat utilization efficiency caused by asynchronous heat supply adjustment and waste heat recovery response are effectively solved.

The utility model discloses a cold and heat adjusting device which comprises a heat exchange part, a first installation assembly and a second installation assembly, the heat exchange part comprises a plate heat exchanger, at least two mutually independent flow channels are arranged in the plate heat exchanger, and the cold and heat adjusting device comprises a carrier part used for bearing the heat exchange part; the first installation assembly comprises a first installation part and a first vibration reduction part, the first installation part is connected to the vertical face of the plate heat exchanger and connected with the carrier part, and the first vibration reduction part is matched with the first installation part and clamped between the vertical face and the carrier part; the second mounting assembly comprises a second mounting piece and a second vibration reduction piece, the second mounting piece is supported at the bottom of the plate heat exchanger and connected with the carrier piece, and the second vibration reduction piece is arranged between the second mounting piece and the plate heat exchanger. Therefore, the first vibration reduction part and the second vibration reduction part can buffer vibration of the plate heat exchanger in different directions, so that the mounting stability of the heat exchange part is improved.

The invention discloses a preparation method of a flexible heat regulator material based on liquid crystal elastomer-liquid metal composite foam. The preparation method comprises the following three steps: preparation of pre-crosslinked liquid crystal elastomer foam, deformation programming of the liquid crystal elastomer foam and compounding of the liquid crystal elastomer foam and liquid metal. The obtained liquid crystal elastomer-liquid metal composite foam has a thermally induced reversible deformation characteristic, is in a contraction state in a low-temperature region and in an expansion state in a high-temperature region, has a transition temperature window of 40-100 DEG C, has a maximum thermal resistance switch ratio of 3.8, has flexibility below a nematic-isotropic transition temperature (TNI), and has high elasticity above the TNI. The thermal regulator material disclosed by the invention realizes consideration of high switch ratio and mechanical flexibility, and can provide important material support for dynamic and intelligent thermal management of a flexible system in the future.

A microclimate control system for an occupant includes a component that has a thermal effector that is configured to provide thermal conditioning to an occupant. An image capture unit is configured to receive an image of the occupant. A controller is in communication with the image capture unit, the controller includes an extractor algorithm that is configured to extract occupant personal parameters based upon the image. The controller includes a first estimator that is configured to predict an occupant clothing insulation value based upon the occupant personal parameters, and a second estimator is configured to predict occupant anthromorphic characteristics based upon the occupant personal parameters. The controller is configured to regulate the thermal effector based upon the occupant clothing insulation value and the occupant anthromorphic characteristics.

The present invention relates to the technical field of heating network regulation. Disclosed are an intelligent heating network operation and regulation system and method. A behavior collection module deploys several heating regulation detection points on a heating pipe network to collect heating-influencing behaviors at each heating regulation detection point; a behavior analysis module separately performs clustering on each heating-influencing behavior to determine behavior clusters, analyzes each behavior cluster, and obtains a target reference behavior cluster on the basis of the analysis results; a first calculation module collects real-time feature data of the heating pipe network, performs analysis, and calculates an initial heating load of the heating pipe network on the basis of the analysis result; and a second calculation module calculates a correction factor of the heating pipe network on the basis of the target reference behavior cluster, and corrects the initial heating load on the basis of the correction factor, so as to obtain a target heating load. The present invention can monitor the operation state of a heating pipe network in real time, automatically analyze heating variations, and quickly and accurately set a heating load, so as to achieve energy conservation and emission reduction, improve the user satisfaction, and reduce the operation and maintenance costs.

The invention provides a linkage equipment control system for indoor overall thermal environment and local thermal regulation. The linkage equipment control system comprises a parameter acquisition module used for acquiring and recording various real-time indoor parameters; the linkage logic calculation module is used for analyzing local and overall heat requirements and calculating a background temperature regulation expected value; and the thermal regulation equipment module is used for regulating and controlling the background temperature so as to reach the expected temperature value and meet the indoor thermal environment requirement. According to the invention, by using the pairing control connection between the Internet of Things infrared remote controller and the PECS equipment, and by setting the parameter acquisition module, the linkage logic calculation module and the thermal regulation equipment module, the background thermal environment regulation equipment can be intelligently regulated and controlled according to the thermal demand of a user, and the control of the high-comfort, low-carbon and healthy background thermal environment regulation equipment is realized.

The invention belongs to the technical field of electric heating joint optimization scheduling, and discloses a cold region novel power system flexibility improvement method and system based on heat supply network inertia, and the method comprises the steps: fusing the inertia characteristics of a heat supply network, building an electric heating cooperation model, and achieving the whole-cycle cost minimization solving and flexibility quantitative evaluation through the combination of multiple constraints, and a heat storage adjusting space is provided for the system according to the heat delay and heat loss characteristics of heat supply network inertia, the CHP unit is allowed to preferentially respond to power dispatching on the premise that heat supply stability is guaranteed, the straight condensing thermal power unit is allowed to adjust power supply and demand through climbing, a heat pump supplements a heat supply gap, and the flexible adjusting capacity of the system is greatly improved. The whole-cycle cost optimization target reduces unit operation and wind and light abandoning losses, multi-dimensional flexibility index quantification verifies the remarkable improvement effect of heat supply network inertia on the flexibility of a power grid, the stable operation capacity of a power system under high-proportion new energy access is enhanced, and the winter heat supply reliability of the cold region is guaranteed.

The invention provides a data center carbon dioxide transcritical direct cooling chip backboard cooling system, which comprises a carbon dioxide gas cooler configured to generate a coolant; the coolant is carbon dioxide in a liquid state or a gas-liquid coexistence state; a plurality of liquid cooling units, wherein the liquid cooling units are configured to perform refrigeration by gasifying the coolant; and the coolant distribution unit is respectively connected with all the liquid cooling units through independent pipelines, and the coolant distribution unit is configured to perform multi-stage regulation on the refrigerating capacity of all the liquid cooling units according to the regional cooling requirements. Through the system, the problem that an existing data center cooling system cannot achieve multi-stage heat exchange adjustment is solved.

A wearable garment, such as a vest, for providing thermal conditioning, for example cooling and / or heating, to a user. The vest may be used with cryogenic temperatures. Peltier devices, pre-charged nitrogen canisters, or miniature Stirling cryocoolers may be mounted and built into the wearable or externally carried or mounted thereto. A pump, such as a vacuum diaphragm pump, causes thermally conditioned air to flow through a series of porous regenerative tubing and / or porous panels to supply conditioned air to a user of the garment. The system may use a cryocooler having a pulsating cold finger. The cryo embodiments may supply −200° C. gas through the panels or tubing. Portable systems can be carried or attached, such as HVAC, refrigeration, heating or the like. Control systems may regulate the temperature and may be adjusted by a user, for example using an input pad or a mobile device.

The invention relates to the technical field of thermochromism glass application, in particular to a thermochromism turnover window with a dual-mode adjusting function. The thermochromism turnover window comprises a window sash sealing component, thermochromism glass, a window body rotating shaft, a window frame body and double-layer hollow glass. The window sash sealing component is rotationally mounted on one side of the window frame main body; the window body rotating shaft is mounted on the window frame main body; a cavity is formed between the double-layer hollow glass and the thermochromic glass; ventilation openings are reserved in the top and the bottom of the window body rotating shaft; the ventilation opening is communicated with the cavity; the window body rotating shaft rotates by an angle to adjust the mode of the turnover window; in the heat insulation mode, the thermochromic glass faces outwards, and the cavity is communicated with the outdoor environment; in the heat preservation mode, the thermochromic glass faces inwards, and the cavity communicates with the indoor environment; according to the window body, the characteristics of the thermochromic material and a physical overturning structure are fully utilized, dual-mode indoor environment photo-thermal adjustment is achieved, the indoor photo-thermal environment of a building can be improved, and the energy efficiency and the comfort degree are improved.

Methods and apparatuses for manipulating the temperature of a surface are provided. Devices of the present disclosure may include a thermal adjustment apparatus, such as a controller in electrical communication with one or more thermoelectric materials, placed adjacent to the surface of skin. The device may generate a series of thermal pulses at the surface, for providing an enhanced thermal sensation for a user. The thermal pulses may be characterized by temperature reversibility, where each pulse includes an initial temperature adjustment, followed by a return temperature adjustment, over a short period of time (e.g., less than 120 seconds). The average rate of temperature change upon initiation and upon return may be between about 0.1° C. / sec and about 10.0° C. / sec. In some cases, the average rate of the initial temperature adjustment is greater in magnitude than the average rate of the return temperature adjustment.