Heating system
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Solution Overview
Problem
Conventional heating systems often waste energy by heating fluid to the highest required temperature across all consumer circuits, even if not all circuits have a heat demand, leading to inefficient fuel usage and reduced efficiency in heat pumps.
Innovation Solution
A control method that determines if a heat requirement exists in each consumer circuit and only requests a specific flow temperature from the heater if a threshold volume flow is met, allowing the heater to reduce or stop heating when no demand is present, and adjusting flow temperatures based on individual circuit needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heater is controlled to provide the highest required flow temperature for all consumer circuits, then all consumer circuits can be supplied with hot fluid, but energy is wasted by heating fluid to the highest temperature even when not all circuits have heat demand
Solution Approach 1:
The patent segments the heat supply control by consumer circuit, with each circuit independently reporting its heat demand status. The control device receives individual demand signals from each consumer circuit and activates the heater only for circuits that require heating, rather than heating all circuits uniformly. This segmentation allows the system to maintain reliability for circuits that need heat while avoiding energy waste in circuits that don't.
Solution Approach 2:
The patent implements local quality control where each consumer circuit receives the temperature and flow rate it specifically needs rather than a uniform high temperature to all circuits. The control device adjusts the flow temperature and volume flow on a per-circuit basis according to actual demand, ensuring that each circuit gets locally optimized heat supply without the energy penalty of overheating circuits that don't require it.
2Reliability
If the heater operates continuously to maintain flow temperature, then heat demand can be met when needed, but fuel consumption increases
Solution Approach 1:
The patent implements periodic action by having the heater operate only during periods when heat demand is detected. The control device continuously monitors demand signals from consumer circuits and activates the heater only when needed, rather than maintaining continuous operation. This periodic activation based on actual demand reduces fuel consumption while ensuring heat availability when required.
Solution Approach 2:
The patent enables self-service operation where consumer circuits autonomously signal their own heat demand to the control device. Each consumer circuit with a flow sensor can independently detect and report its need for heating, allowing the system to respond to actual needs without continuous centralized control or preventive heating, thereby reducing unnecessary fuel consumption.
3Reliability
If flow temperature is maintained high for all circuits, then heating demand can be satisfied, but heat pump efficiency decreases
Solution Approach 1:
The patent applies dynamics by making the flow temperature adjustable and variable rather than fixed at a high value. The control device dynamically adapts the flow temperature to the actual heating requirements of individual consumer circuits, lowering the temperature when circuits don't need high heat or when ambient conditions allow. This dynamic adjustment maintains heating capability while significantly improving heat pump efficiency by operating in more favorable temperature ranges.
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 approach reduces energy consumption, saves fuel, and increases the efficiency of heating systems by optimizing the operating temperature range, particularly benefiting heat pumps.
Implementation Method 1
a fluid circulates between the heater and the consumer circuits. The fluid is heated in the heater, flows through a flow into the consumer circuit, cools down there and flows back into the heater through a return
Implementation Method 2
The fluid is heated in the heater
Data Source
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AI summary
A heating system includes a heater and a consumer circuit between which a fluid circulates for heat transfer. A method for controlling a heating system comprises the steps of determining a requirement for a flow temperature of the consumer circuit; and providing the request to the heater. The request is only made available if there is a heat demand in the consumer circuit.