Intermediate Heat Exchange Loop for Staged Cooling System Installation
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Solution Overview
Problem
During the staged installation of a new cooling system, the new system operates at low efficiency due to handling a small number of loads, leading to continuous compressor cycling and increased energy consumption and maintenance costs.
Innovation Solution
Incorporating a heat exchanger that transfers heat from the refrigerant of the old system to the new system, either directly or through an intermediary fluid, to increase the operating load and efficiency of the new system, thereby reducing the load on the old system and optimizing the installation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the new cooling system is installed in stages to replace the old system, then the installation process can continue without complete system shutdown, but the new system operates at low efficiency due to handling only a small number of loads
Solution Approach 1:
A heat exchanger is introduced as an intermediary device to transfer heat from the old refrigerant to the new refrigerant. This allows the new system to simulate a larger operating load by receiving additional heat input, thereby improving compressor efficiency and reducing cycling during staged installation without disrupting continuous cooling operation.
Solution Approach 2:
The operating parameters of the new system are artificially modified by adding heat from the old system through the heat exchanger. This changes the thermal load parameter on the new refrigerant, allowing the compressor to operate at more efficient capacity levels even when the actual cooling load is small.
2Adaptability or versatility
If the new cooling system handles only a small number of loads during installation, then the staged replacement can proceed, but the compressor cycles continuously increasing energy consumption and maintenance costs
Solution Approach 1:
The heat exchanger serves as a mediator that transfers thermal energy from the old refrigerant cycle to the new refrigerant cycle. This intermediary heat transfer mechanism allows the new compressor to maintain continuous operation at optimal capacity, reducing energy consumption and eliminating continuous cycling while the staged installation progresses.
3Productivity
If heat is transferred directly from the old refrigerant to the new refrigerant, then the new system efficiency improves, but the system complexity increases with additional heat exchanger components
Solution Approach 1:
The heat exchanger is designed to perform multiple functions: it transfers heat from old to new refrigerant, can serve as a condenser or evaporator depending on operating conditions, and provides a pathway for refrigerant heat exchange during the transition period. This multi-functionality reduces the need for separate dedicated heat transfer components.
4Ease of operation
If an intermediary fluid is used to transfer heat between refrigerants, then the heat transfer process becomes more controllable, but the system complexity and component requirements increase
Solution Approach 1:
An intermediary fluid is introduced as a thermal mediator between the old and new refrigerants. This fluid allows controlled heat transfer through a closed-loop system with pumps and heat exchangers, enabling precise management of thermal energy transfer while isolating the two refrigerant systems and preventing direct mixing.
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 approach enhances the operating efficiency of the new cooling system during installation stages by simulating a larger load, reducing energy consumption, and minimizing maintenance needs, ultimately leading to cost savings and smoother transition from the old to the new system.
Implementation Method 1
The heat exchanger receives the first refrigerant from the first compressor and receives the second refrigerant from the second compressor. The heat exchanger transfers heat from the first refrigerant to the second refrigerant.
Implementation Method 2
The first compressor compresses a first refrigerant.
Implementation Method 3
The first load uses the first refrigerant to remove heat from a space proximate the first load.
Implementation Method 4
The second compressor compresses a second refrigerant.
Implementation Method 5
The second load uses the second refrigerant to remove heat from a space proximate the second load.
Data Source
AI summary
An apparatus includes a first compressor, a first load, a second compressor, a second load, a first heat exchanger, and a second heat exchanger. The first compressor compresses a first refrigerant. The first load uses the first refrigerant to remove heat from a space proximate the first load. The first load sends the first refrigerant to the first compressor. The second compressor compresses a second refrigerant. The second load uses the second refrigerant to remove heat from a space proximate the second load. The second load sends the second refrigerant to the second compressor. The first heat exchanger receives the first refrigerant from the first compressor. The first heat exchanger transfers heat from the first refrigerant to a fluid. The second heat exchanger receives the second refrigerant from the second compressor. The second heat exchanger transfers heat from the fluid to the second refrigerant.