Multiple-work-condition heat and humidity treatment purifying unit coupling partition air conditioner method

Abstract

The invention relates to a multiple-work-condition heat and humidity treatment purifying unit coupling partition air conditioner method. Fresh air enters a primary effect filter segment (2) from an air inflow pipe / air valve (1), is pressurized through an air feeder segment (3), and enters a static pressure flow dividing box segment (5) from a medium effect filter segment (4); air flow dividing isperformed, the air volume Ga of the air flowing to a first heat and humidity treatment segment (6) in a divided manner meets the temperature and humidity work condition requirement of a continuous airconditioner area (A), and temperature and humidity treatment is performed through surface cooling-reheating or heat supplying-humidifying; the air is conveyed to first efficient filter sets (a1, a2,a3 and a4) of a plurality of rooms through a first air feeding pipe / valve net (8) to be used as a cleaning and ventilation air conditioner of the continuous air conditioner area (A); the air volume Gbof the air flowing to a second heat and humidity treatment segment (7) in a divided manner meets the temperature and humidity work condition requirement of an intermittent air conditioner area (B), and temperature and humidity treatment is performed through surface cooling-reheating or heat supplying-humidifying; the air is conveyed to second efficient filter sets (b1,...,b11) of the plurality ofrooms through a second air feeding pipe / valve net (9) to be used as a cleaning and ventilation air conditioner of the intermittent air conditioner area (B). Coupling partition of experiment animal rooms is achieved, air conditioners run and are managed as required, and energy is saved.

Description

Technical field [0001] The invention relates to the field of ventilation and air conditioning equipment, in particular to a method for coupling zoned air conditioning of a multi-working condition heat and moisture treatment purification unit. Background technique [0002] With the development of biosafety science in China, the laboratory animal room is continuously upgraded to a barrier environment and energy-saving transformation. According to GB14925-2010 "Laboratory Animal Environment and Facilities", the barrier environment of the laboratory animal room usually has an animal quarantine room, an animal boarding room, and an animal Experimental rooms, as well as the flow of people, logistics, animals, and sewage: including one dressing (B1), two dressings (B2), buffer (B3), air lock (B8), animal reception, clean corridor, dirt corridor, clean In order to meet the barrier environmental indicators and avoid cross-contamination in rooms such as temporary storage of objects, the la...

AI Technical Summary

Problems solved by technology

[0002] With the development of biosafety science in China, experimental animal rooms are constantly upgraded to barrier environments and energy-saving renovations. According to GB14925-2010 "Experimental Animal Environment and Facilities", the barrier environment of experimental animal rooms is usually equipped with animal quarantine rooms, animal foster rooms, animal The experimental room, as well as the flow of people, logistics, animals, and sewage flow channels: including first changing (B1), second changing (B2), buffer (B3), air lock (B8), animal reception, clean corridor, dirt corridor, clean In order to meet the barrier environment indicators and avoid cross-contamination, the experimental animal room usually adopts whole-year, all-day, all-day and night, fresh air overall purification air conditioning to meet the minimum number of air changes, temperature and humidity, cleanliness, and the minimum connected area. Static pressure difference, ammonia concentration, number of colonies and other indoor environmental indicators, but the overall purification air conditioner usually needs to be operated according to the fresh air conditioner with the minimum number of air changes ≥ 15 times / h, and the energy consumption is extremely high. Therefore, the scientific research cost of animal experiments is greatly increased, so the air conditioning and energy saving of barrier facilities in experimental animal rooms is extremely high.

[0003] In order to reduce the energy consumption of the barrier facilities in the experimental animal room, the design often adopts temporary storage of clean objects, clean corridors, and second-shift rooms for direct return air, but the actual energy-saving effect is not good. Analysis of the reasons shows that: In order to avoid cross-contamination According to the requirements of GB14925-2010 "Experimental Animal Environment and Facilities", the minimum static pressure difference of ≥ 10Pa should be set in the connected area: temporary storage of clean objects 50Pa> clean corridor 40Pa> animal foster room / animal experiment room 30Pa> dirt Corridor 20Pa> Pollution corridor buffer 10Pa> Facility exterior 0Pa, due to the temporary storage of net objects at 50Pa, the external air pressure difference is the largest, and the disinfection and sterilization facilities in the facility, such as transfer windows / steam sterilizers / aqueducts, etc. The scrubbing and disinfection room is connected, and it is impossible to prevent the temporary storage of clean objects from leaking to the outside of the barrier facility. The test found that even if the return air valve is completely closed and no return air is returned, some facilities still need more than 30 fresh air changes per hour to maintain the external 50Pa In addition, the steam sterilizer takes a long time to sterilize, the surface temperature is high, and the heat dissipation is large. After the sterilization is completed, the amount of residual steam emitted when the door is opened to pick up the objects is also large, and the return air in summer has basically no energy-saving effect; and Clean corridor 40Pa and buffer 30Pa, animal foster room / animal quarantine room / animal experiment room 30Pa, etc. are all connected through the clean door. Due to the existence of step pressure difference, it is impossible to avoid the leakage of air in the clean corridor to many rooms with low pressure difference. The test found that even Close all return air valves, do not return air, and some facilities require more than 20 fresh air changes per hour to maintain a clean corridor with an external pressure difference of 40Pa; therefore, the design of the above-mentioned rooms that can save energy through return air does not actually have obvious effects Energy-saving effect, so the fresh air purification air conditioner is basically used

[0004] In the existing technology, the advanced exhaust air heat recovery technology at home and abroad is also tried to be used in the exhaust air waste heat recovery of the fresh air full delivery and full exhaust system of the experimental animal room, but because it cannot be completely guaranteed that the fresh air and exhaust air will not cross each other, Unable to avoid cross-contamination and questioned by laboratory animal experts, so the application of exhaust air heat recovery technology in the laboratory animal room industry is hindered

[0005] In the prior art, the application of exhaust air sensible heat recovery technology in experimental animal rooms has also emerged as the times require. In hot summer and cold winter, when the temperature difference between fresh air and exhaust air reaches about 10°C, the sensible heat recovery efficiency can reach 50 %, converted into a total heat recovery efficiency of about 15-20%, achieving a good energy-saving effect; however, in excessive seasons, the energy consumption of fresh air dehumidification is still large, and when the temperature difference between fresh air and exhaust air is less than 5°C, sensible heat The recovery efficiency is very low. Therefore, the annual total heat recovery efficiency is still lower than 10%. As a result, the application of exhaust sensible heat recovery technology in the barrier facilities of experimental animal rooms has not yet been well promoted.

[0006] At present, fresh air conditioners in the barrier facilities of experimental animal rooms usually use single-working condition heat and humidity treatment units to purify the air conditioners as a whole. In summer / winter, the heat and humidity load per square meter per hour reaches more than 500 watts. "Full on" mode operation is more than 4-5 times the energy consumption of ordinary civil air conditioners. In addition, it runs day and night every day and needs to be operated as usual during holidays. It is actually more than 15 times the energy consumption of civil air conditioners, and the operating cost is huge. , but in fact, except for animal foster care and quarantine areas, the rest of the areas do not have temperature and humidity requirements during non-working hours, but there is no suitable method for energy saving. without delay

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