Flow temperature difference proportional cold energy distribution system and method

Abstract

The invention provides a flow temperature difference proportional cold energy distribution system and method and relates to a flow temperature difference cold energy distribution system and method, and the system and method provided by the invention can be used for solving the defects of a currently applied cold energy metering method and are accurate and reliable in a metered result. The system is characterized in that a main water return pipe at the tail end of a fan coil of each user is provided with a balanced valve with a flow measurement function and a return water temperature sensor; amain water supply pipe at the tail end of each fan coil is provided with a supply water temperature sensor; the supply water temperature sensor and the return water temperature sensor transmit signals to a remote transmission module through unit temperature collectors; and a cold energy meter is arranged on a main pipe and used for transmitting the signals to the remote transmission module. The method comprises the following steps: carrying out initial adjustment on a water system in a building; determining the flow distribution coefficient of the main water supply pipe at the tail end of thefan coil of each user; and calculating the cold energy distributed to each user. The cold energy metering system is low in failure rate and long in service time and can be used for achieving a cold energy fee distribution result which can be easily understood and accepted by people. The system provided by the invention is applied to buildings with fan coil air-conditioning systems.

Description

technical field [0001] The invention relates to a flow temperature difference cooling capacity distribution system and method. Background technique [0002] my country's cooling capacity measurement started late, most of the existing buildings did not install cooling capacity measurement facilities, and a small number of new buildings' centralized air-conditioning systems were equipped with cooling capacity measurement instruments. At present, the metering and charging methods used in China include: area method, water-side cooling meter method (integral type, split type), electricity method, and time method; domestic scholars' theoretical research includes: wind-side cooling method, wind-side enthalpy difference method , Harmonic response method. [0003] 1. Area method [0004] Since the requirement of metering was not considered in domestic HVAC design and property management before, no metering device was designed for the air-conditioning system. Therefore, the cooling...

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Problems solved by technology

[0015] The purpose of the present invention is to provide a flow-temperature-difference proportional cooling capacity distribution system and method, which are used to solve the cooling capacity allocation problem of apartments and office buildings using fan-coil air-conditioning systems; Disadvantages, solve the problem of high initial investment and heavy maintenance workload of the water-side cooling meter method; solve the error caused by replacing the actual working condition with the rated working condition in the time distribution table method; avoid the relative humidity and air volume in the wind-side metering process Difficult to measure and difficult to calibrate

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