The heating / cooling metering system in 2-wire operation enables cost billing with calibrated standard meters.

Abstract

About a novel arrangement of a heating-cooling metering system (5) and (6) in a 2-wire system, consisting of a heat meter with pre-programming and MID approval and a cold quantity meter with approval according to K 7.2

Description

[0001] Background: The present invention relates to a heating / cooling metering system for use in heating and cooling applications, particularly in applications requiring precise measurement of heat and cooling quantities. The system consists of two separate meters, wherein meter 1 is a heat meter with pre-programming and MID (Measuring Instruments Directive) approval, while meter 2 is a cooling quantity meter with K 7.2 approval. The system is characterized by a novel arrangement of the meters and the associated measuring sections, which uses direct-sensing ball valves up to a flow rate of Qp 6 and immersion sleeves from a flow rate of Qp 10.

[0002] Description of the invention: The invention comprises a heating / cooling metering system consisting of: 1. Meter 1: A heat meter with pre-programming and MID approval. 2. Meter 2: A cold quantity meter with approval according to K 7.2. 3. A novel arrangement of the two meters in a 2-wire system that makes it possible to precisely measure both heat and cold quantities and to bill them using calibrated meters. 4. Direct-sensing ball valves in the measuring sections, which can be used up to a flow rate of Qp 6 to ensure accurate temperature measurement and to meet the approval requirements; the use of immersion sleeves from a flow rate of Qp 10 is also regulated according to the approvals of the meters used. 5. An innovative overall system suitable for both heating and cooling applications, enabling precise measurement of the amounts of heat and cold consumed. 6. By using two separate, standardized, approved meters and adhering to the specific arrangement in the heating / cooling meter system, the legal requirements for calibration in heating and cooling cost accounting are easily met. This ensures the legal compliance of the system and minimizes the administrative effort for meter approval and verification. Technical information regarding the drawing: 1. Generation - General 2. Generation of cold 3. Heat generation 4 consumers 5 heat meters (flow installation) 6 cold meters 7 Flow temperature sensor heat meter 8 Return flow heat meter 9 Return flow of cold water meter 10 Flow temperature sensors, cold water meters 11. Barrier 12 Shut-off valve with sensor installation 13 Lead line 14 Return line

Claims

[1] On a novel arrangement of a heating-cooling meter system (5) and (6) in a 2-wire system, consisting of a heat meter with pre-run programming and MID approval and a cooling meter with approval according to K 7.2 [2] For the unique arrangement of meters (5+6) in this heating / cooling system, whereby meters (5) and (6) are arranged in a 2-wire system and each have a metering section in the supply line (13) and a metering section in the return line (14). This specific arrangement enables optimal recording of heat and cooling quantities / energy to a consumer (4) in heating and cooling applications in order to bill generation with heat (3) or cooling (4) in accordance with the law. [3] This arrangement of the meters allows standard approved cooling and heat meters to be used without the need for special approvals. [4] This arrangement of the meters allows standard approved cooling and heat meters to be used without the need for special approvals. [5] This means that, unlike conventional heating and cooling meters, which divide energy into two tariffs and cover only one area under calibration law, both meters in this system are approved for the entire billing area. This enables legally sound billing and increases the reliability of the system. [6] Furthermore, the new arrangement of the meters (5+6) enables easy remote reading via various standardized radio systems such as Wireless M-Bus, Lora Nb IoT, as well as wired reading methods such as M-Bus, Modbus and KNx. One heat meter value and one cooling meter value can be read and transmitted.

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