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Samples in periodicals archive:
1: Task II - The measuring to study heat transfer in boiling and condensation energy factors in compact heat exchangers, kpl.
Features of the Navien NPE Series tankless water heater include: * 2" PVC Venting up to 60' or a System 636 (ULCS636) option for Canada * 1/2" Gas lines up to 24' * ComfortFlow and Intelligent Preheating technology * Buffer tank included * Recirculation pump included * Field convertibility from natural gas to liquid propane gas * Cascading capable * Dual stainless steel heat exchangers * Ultra condensing efficiency ** Industry leading energy factor of.
With the best performing package featuring an excellent Solar Energy Factor (SEF) rating of 21.
These inputs could be used to calculate an "in service energy factor (EF)" (dividing thermal energy output by electrical energy input); note that this is a site (not source) measurement.
4 and 5 give the residual modal energy and its respective loss energy factors versus the level of loading in cycles for the first mode.
This fall, the Energy Star program will increase its minimum Energy Factor (EF) for gas storage water heaters from 0.
5 per cent each year compared to the required historic data when the energy factors have been calculated.
The engines' highly intelligent design, Business Week-Europe reports, could achieve an energy factor of 94 percent--contrasted to 30 percent to 40 percent energy efficiency of a nuclear power plant, or 40 percent to 60 percent in modern gas-fired plants.