Reduction of return temperature in district heating and increase of return temperature in district cooling
A technology for returning temperature and refrigeration systems, applied in temperature control, electric temperature control, energy-saving heating/cooling, etc., can solve problems such as poor results, avoid ΔT problems, avoid overheating/overcooling or overheating The effect of heat deficit
Active Publication Date: 2022-02-22
VLAAMSE INSTELLING VOOR TECHNOLOGISCH ONDERZOEK NV VITO
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Problems solved by technology
The selection of the relevant heating curves is usually done manually without any measurements and the results are usually so poor that the heating curves have to be manually overridden quite often
Method used
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Embodiment Construction
[0033] The present invention relates to a district network operating according to the performance of local units such as indoor heating and cooling units, thereby achieving low supply temperature / high supply temperature for DH / DC networks respectively.
[0034] Embodiments of the present invention relate to a thermal energy distribution system, for example, for district heating and / or district cooling in which the thermal energy transported by the heat , buildings or industrial sites for heating and / or cooling in localized units. The heating / cooling of the local unit is realized by circulating the heat carrier from the centrally controlled heat source (heating or cooling source) to the heating / cooling device of the local unit through one or more pipes. Thus, the heating or cooling energy is arranged to be distributed to the heating or cooling device by means of the supply conduit or conduits and the used heat carrier is returned in the return conduit.
[0035] Embodiments of ...
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Described is a demand-based DH / DC network operation control system for local heating and / or local heating and / or cooling from a heating source and / or a cooling source, respectively, and using local thermostatic control valves through a local heating system and / or a local cooling system Or distributed control of refrigeration flow. The local thermostatic control valve is adapted to set local heating flow and / or local cooling flow and control data selected from any of the following data brought into the central monitor: local heating system and / or local cooling Local temperature in the system, valve position, local flow, local refrigeration medium pressure and / or local heating medium pressure, and optionally data from the network, the central monitor is adapted to monitor the control data and based on the local heating system and The performance of the local cooling system resets the supply temperature at the heating and / or cooling sources in open loop control.
Description
technical field [0001] The present invention relates to a heating or cooling district network, and / or a method of operating a heating or cooling district network according to the performance of local units such as indoor units, to achieve low supply / high supply temperatures, respectively, of a DH / DC network , and also to software implementing the method of operation when executed on a processing engine. Background technique [0002] District heating or cooling systems preferably have high temperature differentials between supply and return flow temperatures and low flow rates to reduce high pressure operation. Among the above heat distribution systems, constant flow systems and variable flow systems and mixtures of the two flow systems are known. The advantage of a constant flow system is the ability to set the flow to achieve hydraulic balance. The disadvantages are potentially high return temperatures and high heat losses in the network as well as high pumping costs. Th...
Claims
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IPC IPC(8): G05D23/19F24D10/00
CPCF24D10/003G05D23/1934Y02E20/14Y02B30/17Y02B30/70
Inventor H·I·托尔J·德斯梅德特R·萨楞比恩
Owner VLAAMSE INSTELLING VOOR TECHNOLOGISCH ONDERZOEK NV VITO