An air handling system for an open lake current wrapped museum exhibit

Abstract

The utility model discloses a kind of lake flow wrapping open type air treatment systems of cultural relic exhibition hall, the system includes temperature regulating device, humidity regulating device, all-year self-adaptive switching module and indoor air quality monitoring module;Wherein, temperature regulating device is connected with air conditioner air supply pipe and air conditioner return air pipe, the air conditioner air supply pipe is installed on the overhead of the visiting passage of the both sides of the length direction extension of exhibit, air inlet of the air conditioner return air pipe is laid on the side of the visiting passage of the length direction extension of exhibit, to form lateral return air, to form lake flow wrapping type air supply in turn;The utility model realizes the lake flow wrapping type air supply of exhibit by optimizing airflow organization, effectively solve the problem that cultural relic is fragile due to improper airflow distribution.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning, and in particular to an open-air cultural relic exhibition hall air handling system that is enveloped by a lake current. It is mainly used in architectural settings such as museums, cultural relic protection areas, cultural relic warehouses, and high-precision cultural relic restoration rooms, where there are strict requirements for the control of the ambient temperature and humidity, airflow organization and distribution, and air quality of the exhibited and stored cultural relics. Background Technology

[0002] As public buildings for displaying, exhibiting, and collecting cultural relics, exhibition buildings should meet strict environmental requirements. Cultural relics face various destructive threats during exhibition and display, including salt damage caused by temperature and humidity fluctuations, electrochemical corrosion of metallic artifacts (such as bronze disease), fiber degradation caused by microbial growth, and surface embrittlement and cracking due to improper airflow. These environmental factors interact and can often cause irreversible damage within months. Therefore, constructing an appropriate indoor air treatment system, centered on cultural relic protection and considering the exhibition hall's positioning, architectural style, collection types, and exhibition methods, is extremely important for ensuring the safety of cultural relics and extending their lifespan.

[0003] In cultural relic exhibition buildings, different buildings, exhibition halls with different exhibits, and storage rooms for different collections require different temperature and humidity environments. The design, construction, control, and operation of the air conditioning and ventilation system directly or indirectly affect the safety of cultural relics and the comfort of personnel. Therefore, when constructing an air conditioning supply system, the building's purpose must be clearly defined to facilitate the calculation of air conditioning parameters and the rational allocation of the air conditioning and ventilation system. The temperature and humidity standards for the storage rooms of modern architectural museums can refer to JGJ66-2015 "Code for Design of Museum Buildings". The indoor temperature and humidity requirements for other functional areas are shown in Table 1. When constructing the air handling system for cultural relic exhibition halls and museums, comprehensive consideration should be given to the protection of cultural relics during the display and storage period, as well as the thermal comfort of visitors and office staff.

[0004] Table 1 Reference parameters for indoor air environment in each functional area

[0005] Patents concerning fresh air equipment and air conditioning equipment, such as CN202410733869.0 and CN202311739917.9, only mention adjusting for changes in temperature and humidity, but do not elaborate on or optimize the movement and distribution of airflow. Utility Model Content

[0006] The purpose of this utility model is to provide an open-style air handling system for cultural relics exhibition halls that is enveloped by a lake-like flow. By optimizing the airflow organization, it achieves a lake-like flow-enveloping air supply to the exhibits, effectively solving the problem of cultural relics becoming brittle due to improper airflow distribution.

[0007] This utility model is achieved through the following technical solution: an air treatment system for an open-air cultural relic exhibition hall surrounded by a lake, including a temperature regulation device, a humidity regulation device, a year-round adaptive switching module, and an indoor air quality monitoring module; The temperature control device is connected to an air conditioning supply duct and an air conditioning return duct. The air conditioning supply duct is installed above the visitor passages on both sides of the exhibit along its length and supplies air. The air conditioning return duct has an air inlet on the side of the visitor passage on the side of the exhibit along its length, thus forming a lateral return airflow and a lake-like enveloping airflow. The air conditioning return duct of the temperature control device is connected to a fresh air inlet duct, which is equipped with a fresh air valve. The temperature control device is also connected to a fresh air exhaust duct. The humidity control device uses an independent solution-based deep humidity control fresh air unit to process outdoor fresh air and then delivers the processed fresh air into the room; the humidity control device is connected to the branch pipe on the air conditioning supply duct, and the humidity control device is also equipped with a humidity control supply duct. The outlet of the humidity control supply duct is arranged along the lower edge of the open exhibit, so that the airflow of the humidity control device blows towards the bottom surface of the exhibit. The indoor air quality monitoring module includes a gas detector, a temperature and humidity detector, a TVOC detector, a CO2 monitor, and an analyzer; the analyzer is connected to the gas detector, temperature and humidity detector, TVOC detector, and CO2 monitor for data collection and analysis. Switch modules to connect and control humidity control devices, temperature control devices, and indoor air quality monitoring modules; The gas detector, temperature and humidity detector, and TVOC detector are all located around the exhibits; the CO2 monitor is located at the air conditioning return duct.

[0008] Furthermore, the fresh air intake duct is equipped with two-stage filtration sections, coarse and medium efficiency, according to the air intake direction to filter particulate matter in the fresh air.

[0009] Furthermore, the switching module is equipped with an energy-saving operation control unit.

[0010] Compared with previous technologies, the beneficial effects of this utility model are as follows: 1. Optimize airflow organization by adopting a "lake flow" enveloping air supply design. Humidification air supply ducts are arranged along the lower edge of the exhibits to achieve downward air supply, and return air vents are set in the top pedestrian area to achieve upward return air supply. This forms a directional airflow from the exhibits to the visitor area, avoiding turbulence that disturbs the microenvironment of the cultural relics. At the same time, the outer cooling air ducts form an enveloping layer to block external hot and humid air, ensuring that the surface humidity of the cultural relics fluctuates by ≤±5% and the wind speed is <0.3m / s, thus solving the problem of cultural relics becoming brittle due to improper airflow distribution.

[0011] 2. Energy-saving control is based on six adaptive operating modes that switch between seasons and opening / closing status, achieving dynamic regulation of energy consumption and a comprehensive energy saving rate of 35%, thus minimizing the overall energy consumption of the air handling system. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the southwest-facing exhibition hall; Figure 2 Schematic diagram of the host computer layout; Figure 3 A schematic diagram of the airflow organization in the exhibition hall; Figure 4 Enthalpy-humidity diagram of moist air; Figure 5 This is a diagram showing the connection relationship between the temperature control device and the humidity control device.

[0013] Labeling explanation: 1 Temperature control device, 11 Air conditioning supply duct, 12 Air conditioning return duct, 13 Fresh air intake duct, 14 Fresh air valve, 2 Humidity control device, 21 Humidity control supply duct. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings: like Figure 1-5 As shown: The design scheme of this utility model essentially consists of four parts: air conditioning cold and heat source configuration, airflow organization optimization, year-round adaptive mode switching, and indoor air quality monitoring and energy-saving operation control. Taking an ancient ship artifact exhibition hall as an application example, the structural diagram of the exhibition hall is shown below. Figure 1 As shown.

[0015] The air handling system employs independent temperature and humidity control (THIC). Based on the site conditions of this example, the main unit layout is as follows: Figure 2 As shown, the temperature control system uses two direct expansion air conditioning units (referred to as direct expansion units) (total air volume 34900 m3 / h), and the humidity control system uses two digital solution-based deep humidity control units (total air volume 14000 m3 / h). 3 / h, minimum supply air moisture content 3g / kg, summer set moisture content 10.8g / kg, and moisture content adjusted according to indoor temperature at other times) combination mode. Among them, 6400m 3The indoor unit of the direct expansion unit and two dehumidifiers are located in the southwest air conditioning room (formerly the reception room), 28500m². 3 The indoor unit of the / h direct expansion unit should be installed on the open space to the east, and the outdoor unit should be installed on the adjacent open space. All outdoor units should have rainproof, sunproof, and soundproof measures to avoid impacting the surrounding environment.

[0016] like Figure 3 As shown, the humidification air supply ducts are arranged along the lower edge of the hull, and the airflow is organized using a downward supply + upward return method, providing direct and efficient protection for the hull. Return air is drawn from the pedestrian area, creating an airflow direction from the hull towards the visitor area. The cooling air conditioning air supply ducts are arranged along the outer perimeter of the hull. The east side is the main visitor passage with a two-story height, using lightweight fiber fabric air supply ducts for uniform upward air supply; the west side also uses an upward supply method, with a unified lateral return airflow, forming an overall "lake flow" enveloping air supply system.

[0017] Year-round adaptive mode switching: Based on changes in outdoor climate conditions and the need for exhibition hall opening and closing, six modes can be categorized: summer opening, summer closing, transitional season opening, transitional season closing, winter opening, and winter closing. Among these, summer, transitional season, and winter modes are based on enthalpy-humidity charts, such as... Figure 4 As shown, it is divided according to the isenthalpy lines at 25℃ and 55% and the isotherm at 10℃.

[0018] a. Summer opening: Direct expansion machine in variable frequency operation, humidifier in operation, fresh air valve open.

[0019] The humidifier uses a constant air volume and variable supply air parameters (temperature, moisture content) to uniformly distribute air, maintaining a stable relative humidity on the ancient ship (24.5℃, 55±5%). After fresh air and return air are mixed, they are treated by a direct expansion compressor to 17.5℃ and a machine dew point relative humidity of 85%, and then filtered before being delivered into the room. The opening of the fresh air valve is adjusted according to the deviation of the indoor CO2 concentration from the set value; the air volume of the direct expansion compressor is adjusted by frequency converter according to the deviation of the indoor temperature from the set value.

[0020] b. Summer closure: Direct expansion machine operates on frequency conversion, humidifier is shut down, and fresh air valve is closed.

[0021] The return air is treated by the direct expansion unit to 17.5℃ and 85% relative humidity at the machine's dew point, and then filtered before being delivered into the room. Based on the deviation between the indoor temperature and the set value, the frequency converter adjusts the airflow of the direct expansion unit to maintain a stable indoor temperature and prevent temperature increases and relative humidity decreases.

[0022] c. Opening during the transitional season (mainly spring and autumn): Direct expansion units (both operating at 50% air volume at low frequency, without cooling), humidifiers in operation, and fresh air valves open.

[0023] After the fresh air and return air are mixed, they are filtered by a direct expansion unit and then sent into the room (without heating or cooling). The opening of the fresh air valve is adjusted according to the deviation between the indoor CO2 concentration and the set value. The humidity at the outlet of the humidifier (humidifying for a few periods in autumn, and dehumidifying the rest of the time) is adjusted according to the deviation between the relative humidity in the old ship area and the set value.

[0024] d. Closure during transitional seasons (mainly spring and autumn): Direct expansion machines are shut down, humidifiers are running, and fresh air valves are closed.

[0025] Adjust the humidity level at the outlet of the humidifier (dehumidifier / humidifier switch) based on the deviation between the relative humidity in the ancient ship area and the set value.

[0026] e. Winter opening: Direct expansion machine (both units operate at 50% air volume at low frequency), humidifier in operation, fresh air valve open.

[0027] After the fresh air and return air are mixed, they are filtered by a direct expansion unit and then delivered into the room. The minimum indoor temperature is set to 10℃. When the indoor temperature is below 10℃, the direct expansion unit is turned on for heating, and then shut off after reaching 12℃. The opening of the fresh air valve is adjusted according to the deviation between the indoor CO2 concentration and the set value. The humidity at the outlet of the humidifier (humidifying only during certain periods) is adjusted according to the deviation between the relative humidity in the ancient ship area and the set value.

[0028] f. Winter closure: The direct expansion unit operates intermittently (constant air supply temperature, variable air volume), the humidifier operates, and the fresh air valve is closed.

[0029] Set the minimum indoor temperature to 10℃. When the indoor temperature is below 10℃, turn on one direct expansion unit for heating, and turn it off after heating to 12℃. Adjust the moisture content at the outlet of the humidifier (dehumidifier / humidifier switch) according to the deviation between the relative humidity of the ancient ship area and the set value.

[0030] Indoor air quality monitoring modules were installed within the exhibition hall to control the concentration of indoor suspended particulate matter and pollutants. The monitoring strategy is as follows: 1) The solution deep humidification unit, which operates year-round, uses a 6-stage filtration system including coarse filter, solution spray, PM2.5 filter, sub-high efficiency filter, acidic activated carbon filter, and alkaline activated carbon filter to fully filter particulate matter and adsorb air pollutants (especially acidic gases and ozone).

[0031] 2) Direct expansion units are mainly used in summer. Fresh air is drawn from outdoor air and is filtered by two stages of coarse and medium efficiency filters to remove particulate matter from the fresh air.

[0032] 3) PM2.5 pollutants are monitored using industrial-grade high-precision gas detectors, with the analyzers centrally located in the monitoring room. In this example, two DN25 sampling tubes are installed around the ancient ship, leading to the analyzers in the monitoring room. The monitoring data is transmitted to the industrial control computer in real time. Six sets of temperature, humidity, and TVOC analyzers are also installed on-site. Two sets of CO2 analyzers are installed at the return air duct, and the monitoring data is transmitted to the industrial control computer in real time.

[0033] In addition, this utility model also includes an energy-saving operation control unit to minimize the overall energy consumption. The configuration of the energy-saving operation control unit follows the basic principles of distributed control, centralized management, and resource and information sharing, forming a distributed environmental monitoring and energy-saving operation control system that conforms to industrial standards. It also reflects the system's advanced nature, maturity, openness, standardization, scalability, security, and reliability. The unit adopts a B / S (Browser / Server) based network architecture, and the system network protocol should conform to international standards. The system has a three-layer structure: management layer, control layer, and field layer. All three layers should have sufficient openness and be easily expandable to facilitate future changes during operation and maintenance. In summary, the energy-saving control is based on six adaptive operation modes based on seasonal and opening / closing status (e.g., linking the variable frequency direct expansion unit and fresh air valve during summer opening, and utilizing natural cooling sources during transitional seasons). Combined with the three-layer B / S architecture energy-saving control unit (field sensors → control layer algorithm → management layer optimization), it achieves dynamic energy consumption regulation, with a comprehensive energy saving rate of 35%, minimizing the overall energy consumption of the air handling system. Since this technology is a conventional technology, this utility model is only described in a simple way.

[0034] The energy-saving operation control unit consists of a management platform, a core energy-saving control cabinet, energy-saving control cabinets, sensors, actuators, etc. Figure 5 As shown, by distributing and centrally managing the electromechanical equipment (such as depth-sensing units, direct-expansion air conditioning units, environmental monitoring systems, and visitor flow statistics systems) scattered throughout the museum, the system achieves monitoring and control of each piece of equipment, ensuring its normal operation and optimal condition. Simultaneously, with the support of computer software, information processing, data calculation, data analysis, logical judgment, and image recognition are performed, thereby improving the level of modern management and services, ensuring optimal operation, increasing work efficiency and service quality, and meeting the specific requirements of the working environment in the cultural relics exhibition hall.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air handling system for an open-air cultural relic exhibition hall enveloped by a lake, characterized in that: Includes a temperature control device (1), a humidity control device (2), a year-round adaptive switching module, and an indoor air quality monitoring module; The temperature regulating device (1) is connected to an air conditioning supply pipe (11) and an air conditioning return pipe (12). The air conditioning supply pipe (11) is installed above the visitor passage on both sides of the exhibit along the length direction and supplies air. The air inlet of the air conditioning return pipe (12) is arranged on the side of the visitor passage on the side of the exhibit along the length direction to form a lateral return air, thereby forming a lake-flow wrapping air supply. The air conditioning return pipe (12) of the temperature regulating device (1) is connected to a fresh air inlet pipe (13) and a fresh air valve (14) is provided on the fresh air inlet pipe (13). The humidity control device (2) uses an independent solution depth humidification fresh air unit to process outdoor fresh air and send the processed fresh air into the room; the air conditioning supply pipe (11) has a branch pipe, the humidity control device (2) is connected to the branch pipe, the humidity control device (2) is also provided with a humidification supply pipe (21), the outlet of the humidification supply pipe (21) is arranged along the lower edge of the open exhibit, so that the airflow of the humidification is blown towards the bottom surface of the exhibit; The indoor air quality monitoring module includes a gas detector, a temperature and humidity detector, a TVOC detector, a CO2 monitor, and an analyzer; the analyzer is connected to the gas detector, temperature and humidity detector, TVOC detector, and CO2 monitor for data collection and analysis. Switch the module to connect and control the humidity control device (2), temperature control device (1) and indoor air quality monitoring module; Among them, the gas detector, temperature and humidity detector and TVOC detector are all distributed around the exhibits; the CO2 monitor is set at the air conditioner return air duct (12).

2. The air handling system for an open-air cultural relic exhibition hall enveloped by a lake as described in claim 1, characterized in that, The fresh air intake duct (13) is equipped with two-stage filtration sections, coarse and medium efficiency, according to the air intake direction to filter particulate matter in the fresh air.

3. The air handling system for an open-air cultural relic exhibition hall enveloped by a lake as described in claim 1, characterized in that, The switching module is equipped with an energy-saving operation control unit.

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