Temperature control system with replacement module electric heat pump
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Solution Overview
Problem
The high cost of replacing legacy gas heaters in heating and cooling systems with new heat pump systems, due to the extensive removal and reinstallation of ductwork and associated components, presents a significant barrier to adopting more environmentally friendly and efficient heating solutions.
Innovation Solution
The implementation of a replacement module electric heat pump that can be seamlessly integrated into existing ducted gas heater systems, allowing for the retention of existing ductwork and components, thereby reducing installation costs and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a legacy gas heater is completely replaced with a new heat pump system, then environmental friendliness and heating efficiency are improved, but installation cost and system complexity increase significantly
Solution Approach 1:
The heat pump system is divided into modular components: an outdoor unit containing the compressor and refrigerant circuit, and an indoor air handler unit. This segmentation allows the outdoor unit to be installed in a new location while the indoor unit connects to existing ductwork, reducing installation complexity while maintaining environmental benefits
Solution Approach 2:
The heat pump system is designed to provide multiple functions: heating, cooling, and hot water generation. This multi-functionality consolidates what would otherwise require separate systems into a single installation, reducing overall system complexity while improving environmental performance by eliminating the need for a separate water heater
2Use of energy by moving object
If a legacy gas heater is completely replaced with a new heat pump system, then heating efficiency is improved, but installation cost increases due to ductwork removal and reinstallation
Solution Approach 1:
The system design anticipates the need for ductwork modifications by providing transition fittings and extended vent connections that can be pre-installed or easily adapted during the replacement process. This preliminary preparation reduces the need for costly custom fabrication and reinstallation of entire ductwork systems
Solution Approach 2:
A transition adapter or intermediary component is used to connect the new heat pump system to the existing gas heater ductwork. This intermediary allows the new high-efficiency heat pump to interface with legacy ductwork without requiring complete removal and reinstallation, thereby maintaining heating efficiency improvements while reducing installation costs
3Device complexity
If existing ductwork is retained when replacing with a heat pump, then installation cost is reduced, but system compatibility and performance may be compromised
Solution Approach 1:
The heat pump system is designed with adjustable parameters including variable refrigerant flow rates, adjustable fan speeds, and modulating heating/cooling capacity. These parameter changes allow the system to adapt to the characteristics of existing ductwork while maintaining optimal performance and compatibility
Solution Approach 2:
The system incorporates dynamic control capabilities with variable speed motors and electronic expansion valves that can adjust operation in real-time based on actual system conditions. This dynamic operation allows the heat pump to compensate for variations in existing ductwork characteristics, ensuring reliable performance while retaining legacy ductwork
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 a cost-effective transition from gas heaters to electric heat pumps, maintaining system efficiency and environmental benefits while minimizing the financial burden of system replacement.
Implementation Method 1
a heat pump, the heat pump being a replacement module electric heat pump
Implementation Method 2
the cooling unit is an evaporative cooler
Implementation Method 3
the heat pump includes a fan module and a coil module
Data Source
AI summary
Devices, systems, and methods for controlling a temperature within an interior space of a building, and modifying a pre-existing temperature control system by replacing a gas heater with a heat pump. In one embodiment, a temperature control system includes a cooling unit, a heat pump, and ductwork connecting the cooling unit and the heat pump. In one embodiment, a method of operating a temperature control system includes providing to an interior space of a building heated air with a heat pump, providing cooled air with the heat pump, and providing dehumidified air with the heat pump. The method may further include providing supplemental cool air to the interior with the heat pump. In one embodiment, a method of modifying or retrofitting a pre-existing temperature control system includes replacing a pre-existing gas heater with a heat pump, while retaining a cooling unit and ductwork of the pre-existing system.