Chilled water generation system
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Solution Overview
Problem
Conventional single effect absorption refrigerating machines require high heat source temperatures to produce chilled water at lower temperatures, limiting the utilization of lower temperature heat sources and necessitating an improvement in coefficient of performance (COP) at low heat source temperatures.
Innovation Solution
A chilled water generation system comprising multiple single effect absorption refrigerating machines with single stage evaporative absorbers and one absorption refrigerating machine with a multiple stage evaporative absorber, where hot water and chilled water flow through the machines in series to efficiently utilize heat from both stages, enhancing heat source temperature differences and COP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a two stage absorption cycle machine is used to utilize heat source temperature of about 60°C, then the heat source temperature range is expanded, but the coefficient of performance (COP) needs improvement
Solution Approach 1:
The system merges two absorption refrigerating machines with different temperature characteristics into a coordinated system. The first machine (single effect, single stage) and the second machine (two stage, multiple stage evaporative absorber) work together with their heat source flow passages and chilled water flow passages connected in series, achieving both low heat source temperature utilization and improved overall COP through optimized heat transfer and refrigeration cycle integration.
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
This configuration improves the coefficient of performance at low heat source temperatures by effectively using both high-temperature heat from single effect machines and low-temperature exhaust heat from multiple stage machines, increasing the range of heat utilization and reducing costs.
Implementation Method 1
a single effect absorption refrigerating machine that generates a chilled water with a hot water as a heat source, and an absorption refrigerating machine provided with a multiple stage evaporative absorber
Implementation Method 2
single stage evaporative absorber, and an absorption refrigerating machine provided with a multiple stage evaporative absorber
Data Source
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AI summary
There is provided a chilled water generation system, which can be improved in coefficient of performance even at a low heat source temperature. A chilled water generation system (70) comprises a single effect absorption refrigerating machine (1) that generates a chilled water with a hot water as a heat source, and an absorption refrigerating machine (2) provided with a multiple stage evaporative absorber. The chilled water generation system (70) is constructed so that a hot water and a chilled water are caused to first flow to the single effect absorption refrigerating machine (1) and to then flow to the absorption refrigerating machine (2) provided with the multiple stage evaporative absorber.