PTAC with Integrated ERV/HRV to Reduce Compressor Power Consumption
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Solution Overview
Problem
Traditional packaged terminal air conditioner (PTAC) systems consume high power due to the compressor/heat pump's workload, which increases with air conditioning demands, leading to increased energy consumption and costs.
Innovation Solution
Integration of an Energy Recovery Ventilator (ERV) or Heat Recovery Ventilator (HRV) unit within the PTAC system's housing, strategically positioned to reduce the workload on the compressor by preheating or precooling outdoor air, thereby reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the compressor/heat pump is used to cool or heat outdoor air drawn into the indoor portion, then the air conditioning requirement is met, but the power consumption increases significantly
Solution Approach 1:
The ERV/HRV unit performs preliminary cooling or heating of outdoor air before it enters the indoor portion. By pre-conditioning the air using recovered energy from exhaust air, the compressor/heat pump does not need to work as hard, thereby reducing overall power consumption while still meeting the air conditioning requirement
Solution Approach 2:
The ERV/HRV unit acts as an intermediary device between the outdoor air and the indoor space. It transfers thermal energy from the exhaust air stream to the incoming outdoor air stream, reducing the thermal load on the compressor/heat pump and thereby reducing power consumption
2Use of energy by moving object
If the ERV/HRV unit is integrated within the PTAC system, then the power consumption is reduced, but the device complexity increases
Solution Approach 1:
The ERV/HRV unit is integrated within the existing PTAC system housing, combining two functional systems (air conditioning and energy recovery ventilation) into a single unified device. This merging approach reduces the need for separate installations and minimizes overall system complexity despite adding energy recovery functionality
Solution Approach 2:
The integrated PTAC system with ERV/HRV unit performs multiple functions: air conditioning, heating, and energy recovery ventilation. By making the system multi-functional, it justifies the increased complexity through enhanced versatility and energy efficiency, providing multiple benefits from a single device
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 integration of the ERV/HRV unit decreases the compressor's workload, leading to lower power consumption and reduced operational costs without sacrificing the advantages of the PTAC system, making it more efficient, less complex, and easier to install and maintain.
Implementation Method 1
an energy recovery ventilator (ERV) or heat recovery ventilator (HRV) integrated with the heat pump such that... preheating or precooling outdoor air
Implementation Method 2
Energy recovery ventilator (ERV) or heat recovery ventilator (HRV)... provides more power efficiency
Data Source
AI summary
The present invention relates to a novel packaged terminal air conditioner (PTAC) system with an integrated energy recovery ventilator (ERV) unit or a heat recovery ventilator (HRV) unit. The integration of the ERV/HRV unit within the PTAC ensures lowering the work load of the compressor that would otherwise consume lot of power to cool/heat the room or any living space.