Method for heating or cooling rooms in a building
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Solution Overview
Problem
In large buildings, remote rooms often experience inadequate thermal supply due to poor hydraulic balancing in heating or cooling systems, leading to uneven temperature transitions, where rooms near the heat generator warm up quickly while distant rooms take longer to reach the desired temperature.
Innovation Solution
A method involving a central control and regulating unit that manages a temperature transition through multiple preselected temperature stages, where all valves are initially opened, then progressively closed as each room reaches a temperature stage, ensuring all rooms reach their target temperature simultaneously, and maintaining the temperature in a regulating phase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If hydraulic balancing is performed to achieve uniform temperature distribution, then thermal supply uniformity is improved, but system complexity and computational requirements increase
Solution Approach 1:
The patent changes the control parameter from flow rate (hydraulic balancing) to temperature stages. Instead of calculating and setting precise flow rates for each room based on hydraulic resistance, the system uses temperature-based control with preselected temperature stages, simplifying the control mechanism while achieving uniform thermal supply
Solution Approach 2:
The patent replaces the mechanical hydraulic balancing system (requiring flow meters, pressure sensors, and complex valve settings) with a temperature-based control system that uses simple temperature sensors and staged valve control, eliminating the need for complex hydraulic calculations and measurements
2Speed
If flow rate is increased in remote rooms to improve thermal supply, then heating speed is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic staged heating where valves are opened in sequences corresponding to different temperature stages. Remote rooms receive increased flow only when needed (at higher temperature stages), while closer rooms are heated first at lower stages, optimizing energy usage by heating rooms in order of their thermal demand
Solution Approach 2:
The system performs preliminary heating of closer rooms first through the initial temperature stages before activating heating to remote rooms. This preliminary action ensures that rooms with lower thermal resistance are warmed before directing energy to remote rooms with higher resistance, improving overall energy efficiency
3Manufacturing precision
If hydraulic balancing is performed using detailed computations, then temperature distribution accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs self-balancing through the staged temperature control method. The control unit automatically determines which valves to open and in what sequence based on simple temperature readings, eliminating the need for manual hydraulic balancing computations and making the system easy to operate without specialized knowledge
Solution Approach 2:
The system uses continuous temperature feedback from sensors in various rooms to automatically adjust valve positions through the staged control algorithm. This feedback mechanism replaces complex manual calculations with simple automated control based on actual temperature measurements, improving accuracy while maintaining ease of operation
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 method simplifies the temperature transition process, reduces computational complexity, and ensures all rooms reach their target temperature efficiently, minimizing temperature differences between fastest and slowest heating rooms without requiring hydraulic balancing or time interval measurements.
Implementation Method 1
each having heat exchanger units connected to the feed and return lines
Implementation Method 2
a central circulating pump for the circulation of a temperature-control fluid in the combined circulation system
Data Source
AI summary
A method for heating or cooling rooms in a building with a temperature-controlled system, the temperature-controlled system has a central heater or cooler with a run-around coil system having a supply line and a return line, a central circulation pump for circulating a temperature-control fluid in the run-around coil system, at least two heat exchanger devices that thermally supply one room of the building and are connected to the supply line and the return line of the run-around coil system, one valve with an actuator for each heat exchanger device, one room temperature sensor for each thermally supplied room, and a central open- and closed-loop control unit that is connected to the actuators of the valves and to the room temperature sensors. The method serves to bring about, in the thermally supplied rooms, a temperature transition from a starting state to an end state, with corresponding room temperature setpoint values.