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  2. Coefficient of performance - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_performance

    Reducing the output temperature to around 30 °C (86 °F) which requires piped floor, wall or ceiling heating, or oversized water to air heaters. Increasing the input temperature (e.g. by using an oversized ground source or by access to a solar-assisted thermal bank [ 10 ] ).

  3. Slip ratio (gas–liquid flow) - Wikipedia

    en.wikipedia.org/wiki/Slip_ratio_(gas–liquid_flow)

    There are a number of correlations for slip ratio. For homogeneous flow, S = 1 (i.e. there is no slip). The Chisholm correlation [2] [3] is: = The Chisholm correlation is based on application of the simple annular flow model and equates the frictional pressure drops in the liquid and the gas phase.

  4. Table of specific heat capacities - Wikipedia

    en.wikipedia.org/wiki/Table_of_specific_heat...

    A Assuming an altitude of 194 metres above mean sea level (the worldwide median altitude of human habitation), an indoor temperature of 23 °C, a dewpoint of 9 °C (40.85% relative humidity), and 760 mmHg sea level–corrected barometric pressure (molar water vapor content = 1.16%). B Calculated values *Derived data by calculation.

  5. Heat capacity ratio - Wikipedia

    en.wikipedia.org/wiki/Heat_capacity_ratio

    In thermal physics and thermodynamics, the heat capacity ratio, also known as the adiabatic index, the ratio of specific heats, or Laplace's coefficient, is the ratio of the heat capacity at constant pressure (C P) to heat capacity at constant volume (C V).

  6. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    An ideal electrolysis unit operating at a temperature of 25 °C having liquid water as the input and gaseous hydrogen and gaseous oxygen as products would require a theoretical minimum input of electrical energy of 237.129 kJ (0.06587 kWh) per gram mol (18.0154 gram) of water consumed and would require 48.701 kJ (0.01353 kWh) per gram mol of ...

  7. Bradford White - Wikipedia

    en.wikipedia.org/wiki/Bradford_White

    Bradford White claims this approach ensures proper and safe installation of its water heaters, and also prevents code violations. In 2006, in a report by J.D. Power and Associates, Bradford White was ranked highest in subcontractor satisfaction of water heater brands. [1]

  8. NTU method - Wikipedia

    en.wikipedia.org/wiki/NTU_Method

    Here, is the molecular weight of water (vapor), is the average molecular weight of air, is the partial pressure of air (not including the partial pressure of water vapor in an air mixture) and can be approximated by knowing the partial pressure of water vapor at the inlet, before dehumidification occurs, ,. From here, all of the previously ...

  9. Slug flow - Wikipedia

    en.wikipedia.org/wiki/Slug_flow

    An image depicting slug flow, where gas bubbles in a liquid 'slug' push along a larger gas bubble. In fluid mechanics, slug flow in liquid–gas two-phase flow is a type of flow pattern.