Residential Heating System Valve Arrangement for Dynamic Flow Control
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Solution Overview
Problem
Residential heating systems face inefficiencies in heat consumption and energy management, as existing valve control methods often result in excessive heat delivery and energy wastage due to variable heat demands and temperature fluctuations.
Innovation Solution
A valve arrangement comprising a flow control valve and a pressure regulating valve, actuated by a controller connected to temperature sensors, maintains a constant pressure difference and adjusts flow based on temperature differences and room temperature readings to optimize heat distribution and consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual valve adjustment or thermostat-controlled valves are used in each branch, then individual room temperature control is achieved, but overall system energy efficiency deteriorates due to excessive heat delivery and inability to optimize total flow
Solution Approach 1:
A central control unit acts as an intermediary between individual room thermostats and the flow control valve. The control unit receives temperature signals from room thermostats, processes them to determine optimal flow rates, and actuates the flow control valve accordingly. This intermediary function enables centralized energy optimization while preserving individual room control capabilities.
Solution Approach 2:
The system implements feedback control by continuously monitoring room temperatures via thermostats and using this information to dynamically adjust the flow rate through the flow control valve. The control unit processes temperature signals and modifies valve opening to maintain optimal energy efficiency while responding to changing heating demands in different rooms.
2Reliability
If high flow rate is supplied to branches to meet peak heating demands, then heating needs are satisfied, but energy consumption increases due to excessive heat delivery when not needed
Solution Approach 1:
The flow control valve is dynamically adjusted based on real-time heating demands rather than operating at a fixed high flow rate. The control unit continuously monitors temperature signals from room thermostats and modifies the valve opening to match actual heating requirements, enabling the system to deliver high flow when needed and reduce flow when demands are lower, thus optimizing energy consumption while maintaining reliability.
3Device complexity
If simple manual valve adjustment is used, then device complexity is minimized, but energy efficiency deteriorates due to inability to dynamically respond to temperature changes
Solution Approach 1:
The system enables self-service energy optimization by automatically adjusting the flow control valve based on temperature signals from room thermostats without requiring manual intervention. The control unit processes temperature information and autonomously modifies flow rates to optimize energy efficiency, eliminating the need for complex manual adjustment mechanisms while achieving superior energy performance.
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 ensures efficient heat delivery by dynamically adjusting flow rates, minimizing energy consumption while maintaining comfort levels by using temperature sensors to monitor and adjust the flow through the heating system, thereby optimizing energy use and reducing waste.
Implementation Method 1
a pressure regulating valve keeping constant a pressure difference over the flow control valve
Implementation Method 2
Heat supplied by the heat source is transferred to a heat carrying fluid on the secondary side of the heat exchanger
Implementation Method 3
the controller is connected to a return temperature sensor in a return line of the branches... connected to a supply temperature sensor upstream the branches
Data Source
Figure 1
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Figure 3
AI summary
A residential heat system (1) is described comprising a heat exchanger (2) having a primary side (3) and a secondary side (4), wherein the primary side (3) is connected to a heat source and the secondary side (4) is connected to a heating arrangement, the heating arrangement comprising plural branches (6, 7), each branch (6, 7) having a heat exchanging device (8, 9). Such a residential heating system should minimize heat consumption. To this end a valve arrangement (14) having a flow control valve (16) and a pressure regulating valve (17) keeping constant a pressure difference over the flow control valve (16) is located in a line (15) between the heat exchanger (2) and the branches (6, 7).