Open type ground surface water source heat pump water intaking minimal energy consumption and water depth calculation method and device

Abstract

The invention relates to an open type ground surface water source heat pump water intaking minimal energy consumption and water depth calculation method and a device. The related water intaking minimal energy consumption calculation method comprises the following steps: (1) using a coupling method to solve a formula 1, solving a minimal value of the total energy consumption of a heat pump unit and a cooling circulation water pump and solving a proper water intaking depth: (formula 1). The related device comprises the heat pump unit, a sand removing system, a water pump, a water intaking pipe and a water intaking heat that are sequentially connected. The water intaking head is movably installed on the water intaking pipe. By system optimization, a water intaking system capable of pumping raw water at different depths is provided, so as to acquire the water having a lower sand content and a proper temperature, accordingly reducing the water intaking energy consumption of the sand remover and increasing the energy efficiency of the water source heat pump system, as well as maximally increasing the overall energy efficiency level of the system. The water intaking system is economical in running as well as simple and convenient in control.

Description

technical field [0001] The invention relates to the technical field of centralized air conditioning systems, in particular to a water intake system for surface water source heat pump air conditioners. Background technique [0002] Surface water bodies have the following three important characteristics: First, due to factors such as rainy seasons, dry seasons, or reservoir storage, the surface water level is divided into flood seasons and dry seasons; second, the sediment concentration of water bodies gradually increases from top to bottom. The three-dimensional distribution phenomenon of high temperature; the third is the stratification phenomenon of the water temperature of the water body from top to bottom. [0003] The open surface water source heat pump directly introduces surface water into the heat exchanger of the heat pump unit for heat exchange (such as figure 1 As shown), the sand content in the water body not only affects the heat transfer performance of the heat...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent (Patent No. 201320004198.1) discloses a sediment-proof water intake head, which overcomes the strong suction caused by the suction concentrated under the water in the prior art by opening a water inlet on the upper surface of the water intake head Disturb the river bottom sediment, and the problem of high sediment content in the influent; there is a sand discharge port on the lower surface of the water intake head, and a limited valve plate is hinged at the sand discharge port position. When the water pump stops absorbing water, it can automatically open the discharge port. sand discharge

[0007] However, the above-mentioned patents are all improved from the structure of the water intake head to obtain raw water with a relatively low sand content, without considering the characteristics of different water depths and different water bodies with different sand content

Moreover, the above-mentioned invention patents do not solve the problem of how to use suitable water temperatures at different water depths to improve the overall energy efficiency of the heat pump system

Images