Energy cascade utilization system and method for exhaust air, air conditioner and heat pump hot water equipment

Abstract

Energy cascade utilization system and method for exhaust air, air conditioning and heat pump hot water equipment, the system includes outdoor air conditioning equipment, outdoor equipment of air source heat pump water heater unit, static pressure box on the side of exhaust equipment, static pressure box on the side of outdoor equipment, and energy cascade utilization A system controller, at least one variable frequency exhaust device and a plurality of dampers. The invention also includes a control method of the energy cascade utilization system. In the present invention, the air outlet of the building is arranged in the air inlet area of ​​the outdoor air-conditioning equipment and the outdoor equipment of the air source heat pump water heating unit, and the opening and closing of the air valve and the forward and reverse rotation of the bidirectional axial flow fan of the outdoor equipment of the air source heat pump water heating unit are controlled as required. And the frequency conversion operation of the frequency conversion exhaust equipment, the present invention can carry out the cascade utilization of cold and heat and the cascade utilization of air kinetic energy at the same time, strengthen the exhaust, reduce the energy consumption of the exhaust, eliminate the phenomenon of poor exhaust or even natural wind backflow, and Recover the cold and heat in the exhaust air, improve the efficiency of the outdoor unit of the air conditioner and the heat pump water heater unit, and reduce the energy consumption of the system operation.

Description

technical field [0001] The invention relates to a system and method for energy cascade utilization of air exhaust, air conditioner and heat pump hot water equipment. Background technique [0002] About the building exhaust system: The building exhaust system is used to exhaust indoor exhaust gas, and its air outlet is always installed on the facade or roof, exposed to the natural wind environment. Due to the effect of natural wind, it is easy to cause the exhaust system to be unsmooth and even the natural wind to flow into the exhaust system. It is generally stipulated that the indoor fresh air volume should not be less than 30m 3 / (h·person) is determined, and the fresh air volume for maintaining indoor positive pressure and local exhaust air should also be considered, so for buildings running air-conditioning systems, the exhaust air volume is considerable, and the exhaust air temperature in summer can be as low as 24°C, and the exhaust air temperature in winter is as hi...

AI Technical Summary

Problems solved by technology

However, at present, buildings lack an effective energy cascade utilization method, the recycling rate of building exhaust energy (thermal energy and kinetic energy) is limited, and the energy discharged from outdoor units of air conditioners and heat pump water heaters (including the energy discharged by outdoor units of air conditioners in summer The heat energy in the hot air, etc.) is directly discharged without utilization, resulting in energy waste

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