Heating and cooling system
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Solution Overview
Problem
Existing heating and cooling systems improve energy efficiency during cooling but not during heating.
Innovation Solution
A heating and cooling system with a heat source side unit and a use side unit, featuring a cooling-purpose heat exchange section with a coiled narrow tube and a heating-purpose heat exchange section with a coiled wide tube, both utilizing refrigerant acceleration through helical rotation to enhance energy efficiency during both cooling and heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a coiled narrow tube is used for subcooling during cooling, then energy efficiency is improved, but the tube configuration is not suitable for maintaining refrigerant temperature during heating
Solution Approach 1:
The patent applies local quality by providing different tube diameter configurations for cooling and heating operations. The cooling-purpose coiled narrow tube has a smaller inner diameter optimized for subcooling during cooling, while the heating-purpose coiled narrow tube has a larger inner diameter optimized for vaporization during heating. This allows each heat exchange section to have locally optimized properties for its specific function, resolving the contradiction between cooling and heating energy efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves significant energy savings of 16% during cooling and maintains a relatively high refrigerant temperature during heating, improving overall energy efficiency.
Implementation Method 1
subcools refrigerant, which is discharged from the compressor and liquefied by the heat source side heat exchanger, with an acceleration phenomenon of the refrigerant by rotating the refrigerant helically
Implementation Method 2
partially vaporizes refrigerant, which is discharged from the compressor and liquefied by the use side heat exchanger, with an acceleration phenomenon of the refrigerant by rotating the refrigerant helically
Implementation Method 3
liquefied by the heat source side heat exchanger
Implementation Method 4
liquefied by the use side heat exchanger
Data Source
AI summary
Provided is a highly efficient heating and cooling system. The heating and cooling system is provided with a cooling-purpose heat exchange section that, during cooling, subcools refrigerant, which is discharged from a compressor and liquefied by a heat source side heat exchanger, with an acceleration phenomenon of the refrigerant by rotating the refrigerant helically before the refrigerant reaches a pressure reducing device, and a heating-purpose heat exchange section that, during heating, partially vaporizes refrigerant, which is discharged from the compressor and liquefied by a use side heat exchanger, with an acceleration phenomenon of the refrigerant by rotating the refrigerant helically after the refrigerant has passed through the pressure reducing device and before the refrigerant reaches the heat source side heat exchanger, in which a heating-purpose coiled narrow tube of the heating-purpose heat exchange section has a flow passage that is formed to be wider than that of a cooling-purpose coiled narrow tube of the cooling-purpose heat exchange section.