PLC-and-MCGS-based heat pump system monitoring method and air source heat pump hot-water system thereof

Abstract

A PLC-and-MCGS-based heat pump system monitoring method and an air source heat pump hot-water system thereof, and relates to a fluid heater using a heat pump and a control method of the fluid heater. The air source heat pump hot-water system comprises heat pump units, a water tank, a water supplement pump, a circulating pump, a hot water booster pump, a power distribution cabinet, an MCGS configuration computer and a PLC module. The PLC module is connected to a remote water meter, a liquid level sensor and a temperature sensor, the PLC module and the MCGS configuration computer are connected with each other and control the water level and the water temperature of the water tank of the heat pump hot-water system in a combined mode, and the MCGS configuration computer is connected to an electric energy meter and obtains time-segmented electric-energy consumption data of the heat pump hot-water system. By means of a monitoring interface of the MCGS configuration computer, equipment states of the heat pump units are monitored in real time, alarming and maintenance prompting signals are displayed, and equipment operation and alarming states of the heat pump units are recorded. The statistical functions of power consumption and water consumption is achieved, centralized control and energy consumption management of the air source heat pump hot-water system achieved, and the energy-saving advantage of air source heat pumps is fully shown.

Description

technical field [0001] The invention relates to a fluid heater utilizing a heat pump and a control method thereof, in particular to a PLC and MCGS-based heat pump system monitoring method and an air source heat pump hot water system using the method. Background technique [0002] With the development of air source heat pump water heaters becoming more and more mature, how to control air source heat pump water heaters has become a hot spot in the industry. In this ever-changing intelligent era, both the solar energy industry and the air-conditioning industry have tended to intelligent control, and it is imperative to replace traditional control methods with intelligent control in the air source heat pump industry. [0003] MCGS (Monitor and Control Generated System, general monitoring and control system) is a set of configuration software system used to quickly construct and generate the upper computer monitoring system, mainly completes the collection and monitoring of field...

AI Technical Summary

Problems solved by technology

[0007] 1. Operation and management personnel are required to go to the site of the air source heat pump to operate the unit. The operation interface is small, and the main parameters cannot be seen at a glance. At the same time, the operation is cumbersome

There is no authority restriction for manual operation, anyone can operate the handheld device, and the security is not high

[0008] 2. In the case that several buildings need water supply, the handheld operator cannot perform centralized management; the lack of historical record function makes it impossible to find the historical data of each parameter

[0009] 3. The handheld operator cannot switch on and off at a fixed time according to the water demand, and cannot automatically adjust the water level of the water tank according to the daily water consumption

[0010] Although the above-mentioned existing systems proposed the MCGS touch screen control of the central air conditioner and the monitoring of the heat exchange station based on PLC and MCGS, none of them involved the control of the air source heat pump water heater unit, and did not take into account the energy consumption of the air source heat pump water heater unit Therefore, even if these technical solutions are used for the control of air source heat pump water heater units, they cannot well reflect the energy-saving advantages of air source heat pumps.

Images