Flow temperature difference proportional cold energy distribution system and method

A cooling capacity distribution and temperature difference technology, which is applied in the field of flow temperature difference cooling capacity distribution system, can solve problems such as difficult measurement and calibration, difficulties, and heavy maintenance workload, so as to eliminate the interference of measurement principles, accurate measurement results, and sufficient theoretical basis Effect

Active Publication Date: 2012-04-18
上海肯特仪表股份有限公司
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  • Application Information

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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 in

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  • Flow temperature difference proportional cold energy distribution system and method
  • Flow temperature difference proportional cold energy distribution system and method
  • Flow temperature difference proportional cold energy distribution system and method

Examples

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Example Embodiment

[0042] Embodiment 1: Combining figure 1 Description, a flow temperature difference proportional cooling capacity distribution system in this embodiment, the system includes a remote transmission module 1, a cooling capacity meter 2, a second signal transmission bus 12, a third signal transmission bus 13, and a plurality of unit temperature collectors 3. Several water supply temperature sensors 6, several return water temperature sensors 7 and several balance valves 5 with flow measurement function;

[0043] A balance valve 5 with a flow measurement function is provided on the end return water main pipe 14 of each user's fan coil unit 4 in a building (for adjusting the balance of the system and recording the balance at the end of the user's fan coil unit 4 A return water temperature sensor 7 is provided on the end return water main pipe 14 between each of the balance valve 5 and the corresponding fan coil unit 4, and a return water temperature sensor 7 is provided at the end of...

Example Embodiment

[0048] Specific implementation mode 2: Combining figure 1 Note that the multiple unit temperature collectors 3 in this embodiment transmit the measured supply and return water temperature data of each unit to the remote transmission module 1 by sharing a first signal transmission bus 11 or wirelessly. Others are the same as the first embodiment.

Example Embodiment

[0049] Specific implementation three: combination figure 1 It is explained that the total flow and total cooling capacity of the system measured by the cooling meter 2 in this embodiment are transmitted to the remote transmission module 1 through the second signal transmission bus 12 together. Others are the same as in the second embodiment.

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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...

Claims

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Application Information

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IPC IPC(8): G01K17/08
Inventor 方修睦姜永成李辉
Owner 上海肯特仪表股份有限公司
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