PDF Publication Title:
Text from PDF Page: 039
Heat Pumps Technology Guide SEAI 8.5. Electricity metering For heat pumps, it is good practice to measure the electricity consumption of the heat pump and other equipment in the heat pump installation. This helps to: • Determine heat output of the heat pump to monitor the coefficient of performance, seasonal performance factor, and seasonal coefficient of performance; • Determine the cost of operating the heat pump system; • Provide diagnostic information in the event of a system fault; and • Meet the requirements of incentive schemes. Consumption is measured via electricity meters installed to measure the electricity supplied to the heat pump system. Data from the meters should be synchronised with the metered heat generation/usage data. The following parameters should be checked to ensure that an electricity meter is suitable for a particular application: • Single or three-phase operation • Supply voltage • Current range Electricity meters must meet the requirements of the Measuring Instruments Directive. If they comply, they will have a CE mark. Under the Measuring Instruments Directive, electricity meters are classified according to their accuracy (Class A, B or C, with C being the most accurate). 8.6. Data logging As well as being useful for billing or compliance, heat meters and electricity meters provide valuable data on the heat pump system operation. This is very useful for monitoring system performance and detecting faults. Many meters can log data. Data loggers can be external, receiving an output through interfaces such as Meter-Bus (MBus) or Modbus. Alternatively, data loggers can be internal, storing data on built-in memory or removable storage (e.g. an SD card). On larger, more sophisticated systems, integrating heat meters into larger monitoring systems means they can be used for continuous monitoring. However, even on small, relatively straightforward systems, data logging from installed meters can be extremely valuable. When data logging functionality is being installed on a heat meter, it is often possible to log (in addition to the heat meter reading) the temperature from the two temperature sensors and the flow rate from the flow meter. This data is much more beneficial, particularly when combined with electricity meter readings. Using heat meter readings at the flow and return points of the source loop of ground-source systems enables monitoring and analysis of the temperatures (to check if they are reducing or increasing year on year), temperature difference (blockages can cause reduced flow rates and increased temperature differences across the source loop) and total heat extracted over a year. 35PDF Image | Heat Pumps Technology Guide
PDF Search Title:
Heat Pumps Technology GuideOriginal File Name Searched:
Heat-Pump-Technology-Guide.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)