High precision air-conditioning capability test apparatus

Abstract

The invention provides a high precision air-conditioning capability test apparatus comprising an air reconditioning machine unit and a central calculation device, wherein the air reconditioning machine unit comprises a heating and cooling heat exchanger, a heating electric heater, a tiny temperature amplitude change adjusting heater, a humidifying electric heater and a tiny humidity amplitude change adjusting heater; the central calculation device comprises high precision type dry bulb temperature and wet bulb temperature detecting devices, an interference removing unit, a stable control unit, a tiny amplitude control unit, a changing quadrant determining unit and a period average calculation unit; the stable control unit is used for changing an unstable state of working conditions in environmental space to a stable state, and the tiny amplitude control unit is used for enabling periodic fluctuation of measured temperature value of the environmental space in a set temperature value range. Via the above technical solution, the high precision air-conditioning capability test apparatus can help control environment temperature and humidity to be in a range from -0.01K to +0.01K, goal value-centered periodic fluctuation can be realized, measured air conditioner capability values are accurate and high in consistency, the high precision air-conditioning capability test apparatus is short in operation period, and laboratory operation cost is reduced.

Description

technical field [0001] The invention belongs to the field of air conditioner capability test, in particular to a high-precision air conditioner capability test device. Background technique [0002] There are two main types of air-conditioning capacity test devices: one is the air enthalpy method test device, and the other is the balance environment type calorimeter test device. [0003] The air enthalpy method test device adopts the air enthalpy difference method for testing, and its structure is as follows: figure 1 shown. During the test, adjust the air reprocessing units on the indoor and outdoor sides of the test device first, so that the respective dry bulb temperature and wet bulb temperature on the indoor and outdoor sides reach the specified environmental conditions. After the environmental conditions are stable, the air conditioner passes the test. The air-inlet dry-bulb temperature and the air-inlet wet-bulb temperature and the air-conditioner's air-out dry-bulb ...

AI Technical Summary

Problems solved by technology

However, in the current control theory, the deviation is zero and the environment that does not change with time is the goal, so it is easy to think that there is a limit to the control

[0008] Therefore, using the current air-conditioning capacity test device, the measured air-conditioning capacity varies greatly, the consistency is poor, and the measurement period is long

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