Method of operating a heating and cooling system
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Solution Overview
Problem
Existing heating and cooling systems, particularly those using heat pumps and geothermal fluid circuits, face inefficiencies in fluid flow control and balancing heating and cooling loads, which limits their ability to simultaneously provide both heating and cooling effectively.
Innovation Solution
A conduit module with four three-way valves is introduced to couple heating/cooling modules with hot, cold, and source fluid circuits, allowing for simultaneous supply of heated and chilled fluids, and enabling selective control of fluid flows to manage both heating and cooling demands efficiently, even when loads are unbalanced.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional heating and cooling systems are used, then heating or cooling can be provided, but the system cannot efficiently provide both heating and cooling simultaneously due to limitations in fluid flow control
Solution Approach 1:
The system is divided into separate hot and cold fluid circuits with dedicated control valves for each circuit. The conduit module segments the refrigerant flow paths, allowing independent control of heating and cooling functions through separate three-way valves that manage hot and cold fluid streams independently.
Solution Approach 2:
The heat pump system is designed to perform multiple functions simultaneously - heating, cooling, and heat recovery - through a universal conduit module that can direct refrigerant flow to serve different circuits based on demand. The system can provide both heating and cooling at the same time to different locations or circuits.
2Use of energy by moving object
If the system attempts to balance heating and cooling loads, then energy efficiency improves, but the system becomes less flexible in handling unbalanced loads
Solution Approach 1:
The conduit module automatically balances heating and cooling loads through its valve configuration and control logic, which self-regulates refrigerant distribution based on real-time circuit demands. The system self-adjusts to handle unbalanced loads without external intervention, maintaining energy efficiency while adapting to varying conditions.
Solution Approach 2:
The system employs dynamic valve control that continuously adjusts refrigerant flow distribution based on real-time heating and cooling demands. The three-way valves can shift positions dynamically to optimize energy efficiency when loads are balanced, and flexibly redirect flow when loads become unbalanced, adapting the system behavior to current conditions.
3Adaptability or versatility
If refrigeration flow is reversed to provide heating, then heating can be provided, but the system cannot provide cooling simultaneously
Solution Approach 1:
The refrigerant flow path is segmented into separate hot and cold circuits with independent control. Instead of reversing the entire refrigeration cycle, the system uses three-way valves to direct refrigerant flow to either the hot fluid circuit or cold fluid circuit independently, allowing one circuit to receive heated refrigerant while the other receives chilled refrigerant simultaneously.
Solution Approach 2:
The conduit module acts as an intermediary between the heat pump and the hot/cold fluid circuits. It uses three-way valves as mediating devices to distribute refrigerant flow appropriately, enabling the heat pump to serve both heating and cooling functions simultaneously without requiring cycle reversal.
4Adaptability or versatility
If more valves are added to control fluid flow for simultaneous heating and cooling, then system flexibility improves, but device complexity increases
Solution Approach 1:
Each three-way valve is designed to perform multiple functions - controlling both hot and cold fluid circuits, managing refrigerant distribution, and adapting to different operating conditions. The conduit module itself serves as a universal component that integrates multiple control functions, reducing the total number of separate valves needed while maintaining system flexibility.
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 solution enables efficient utilization of heating/cooling modules by allowing simultaneous heating and cooling without reversing refrigeration flow, optimizing energy use and managing unbalanced loads, thereby enhancing the system's flexibility and energy efficiency.
Implementation Method 1
a first heat exchanger adapted to heat the fluid being conveyed by the first inlet and first outlet conduits
Implementation Method 2
a second heat exchanger adapted to chill the fluid being conveyed by the second inlet and second outlet conduits
Data Source
AI summary
A method of operating a heating and cooling system, including (1) providing a heating/cooling apparatus comprising first and second heat exchangers, (2) providing a conduit module modularly coupled to the heating/cooling apparatus and adapted to be coupled to a plurality of fluid circuits for heating and/or cooling loads, and (3) operating a control system configured to operate the conduit module in a plurality of heating and/or cooling modes. The conduit module is positioned between the heating/cooling apparatus and the plurality of fluid circuits. The conduit module includes first, second, and third supply conduits and first, second, and third return conduits, to convey first, second, and source fluids to and from respective first, second, and source fluid circuits. The conduit module includes first, second, third, and fourth three-way valves to selectively regulate flow of the first, second, and source fluids.