Operation method of building cooling and heating system

Abstract

The invention discloses an operation method of a building cooling and heating system, including a cooling operation method and a heating operation method; the first step of the cooling operation method is to adjust the operation state; the second step is to start the operation through the general electric control device Frequency conversion compressor, first air-conditioning water pump and fresh air fan, the third step is to continuously carry out summer frequency conversion control, and the total electric control device performs air pressure adjustment and fresh air energy-saving adjustment; the heating operation method is carried out according to the following steps: The first step is to adjust the operating state The second step is that the staff start the frequency conversion compressor, the first air-conditioning water pump and the fresh air blower through the total electric control device, and the third step is to continue the winter frequency conversion control; at the same time, the total electric control device performs air pressure adjustment and fresh air energy-saving adjustment. The invention has simple steps, flexible control, is convenient to switch between the cooling operation method and the heating operation method, adopts various technical means to reduce energy consumption, can separately adjust each air-conditioned room, and the system runs very smoothly.

Description

technical field [0001] The invention relates to the technical field of construction and automation, in particular to a central air conditioner with air extraction and heat exchange. Background technique [0002] In 2003, a severe SARS virus infection occurred in Amoy Gardens, Hong Kong. More than 400 people were infected with SARS virus, and more than 40 people died. After the investigation, it was found that the design defect of the building's air conditioning and ventilation was one of the reasons for the high infection rate. The air intake and exhaust between different households interfere with each other, giving conditions for the cross-transmission of viruses. Therefore, the air condition inside the building is not only related to the comfort level of people's life, but also related to people's health. [0003] The building air conditioning system shoulders the important task of providing good air conditions in the building. The existing building air-conditioning sys...

AI Technical Summary

Problems solved by technology

The existing building air-conditioning system consumes a lot of energy and cannot achieve fine adjustment

For example, when sending fresh air, some central air-conditioning systems send fresh air to all air-conditioned rooms at the same time, and introduce fresh air in unoccupied or used rooms, resulting in waste of energy

[0004] In the past, the fan coil unit used in central air-conditioning can only stop the fan of the fan coil unit after the indoor temperature reaches the set value, and cannot stop the medium (such as water) passing through the fan coil unit with cooling or heat, resulting in unnecessary energy consumption

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