Geothermal adapter for use with a heat pump and associated methods
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Solution Overview
Problem
Heat pumps are inefficient in colder climates due to the scarcity of thermal energy in the air, leading to increased operational demands and frequent defrost cycles, which significantly reduce efficiency and make them impractical for heating in extreme cold conditions.
Innovation Solution
A geothermal adapter that utilizes an outer chamber with heat sinks and a central chamber to tap into geothermal energy, coupled with zeolite to enhance thermal energy absorption and transfer, allowing the heat pump to operate efficiently by leveraging the consistent 55°F temperature of the earth, reducing the need for defrost cycles and improving efficiency in cold conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat pump operates in cold climates, then it can provide heating, but efficiency decreases significantly when outdoor temperature drops below 20°F
Solution Approach 1:
The patent introduces a secondary heat exchanger that acts as an intermediary thermal transfer medium. This secondary heat exchanger absorbs heat from the primary heat exchanger and transfers it to the refrigerant, enabling the heat pump to operate efficiently in cold climates by decoupling the outdoor temperature from the refrigerant heating process
2Reliability
If a heat pump operates in cold climates, then it can provide heating, but frequent defrost cycles are required which increase energy consumption
Solution Approach 1:
The secondary heat exchanger serves as a thermal buffer that prevents frost accumulation on the primary heat exchanger by maintaining its temperature above freezing through continuous thermal transfer to the refrigerant, thereby eliminating the need for frequent defrost cycles and the associated energy losses
3Reliability
If a heat pump operates in cold climates, then it can provide heating, but the system becomes impractical and less efficient compared to fossil fuel furnaces
Solution Approach 1:
The secondary heat exchanger creates an efficient thermal transfer pathway that maintains high system productivity in cold climates by continuously transferring heat from the primary heat exchanger to the refrigerant, keeping the heat pump competitive with or superior to fossil fuel furnaces in terms of 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 geothermal adapter enhances the efficiency of heat pumps in cold climates by reducing the frequency of defrost cycles and maintaining high efficiency regardless of outdoor temperatures, making geothermal heating practical for residential and commercial installations with minimal space and cost requirements.
Implementation Method 1
an outer chamber being sealed under vacuum and having a plurality of heat sinks extending outward... The geothermal adapter is configured to receive refrigerant at a first temperature at the inlet of the central chamber during a heating cycle, and to discharge the refrigerant at a second temperature higher than the first temperature
Implementation Method 2
The geothermal adapter may also include the mineral zeolite surrounding the plurality of heat sinks
Implementation Method 3
The geothermal adapter is configured to receive refrigerant at a first temperature at the inlet of the central chamber during a heating cycle, and to discharge the refrigerant at a second temperature higher than the first temperature at the outlet of the inner chamber
Data Source
AI summary
A geothermal adapter for use with a heat pump includes an outer chamber being sealed under vacuum and having a plurality of heat sinks extending outward, and an inner chamber positioned concentrically and within the outer chamber. The inner chamber has an outlet configured to be coupled to a first portion of a refrigerant conduit of the heat pump. The geothermal adapter also includes a central chamber positioned concentrically and within the inner chamber, where the central chamber has an inlet configured to be coupled to a second portion of the refrigerant conduit of the heat pump. The center chamber extends through the inner chamber to a bottom end that is open and in fluid communication with the inner chamber.