ISO 13256-1:2021 水源ヒートポンプ—性能のテストと評価—パート1：水から空気およびブラインから空気へのヒートポンプ | ページ 6

3.1

water-to-air heat pump

brine-to-air heat pump

heat pump which consists of one or more factory-made assemblies which normally include an indoor conditioning coil with air-moving means, compressor(s), and refrigerant-to-water or refrigerant-to-brine heat exchanger(s), including means to provide both cooling and heating, cooling-only, or heating-only functions

Note 1 to entry: When such equipment is provided in more than one assembly, the separated assemblies should be designed to be used together.

Note 2 to entry: Such equipment may also provide functions of sanitary water heating, air cleaning, dehumidifying, and humidifying.

3.2

water-loop heat pump

water-to-air heat pump using liquid circulating in a common piping loop functioning as a heat source in `heating mode and/or heat sink in cooling mode

Note 1 to entry: The temperature of the liquid loop is usually within a range of 10 °C to 30 °C.

3.3

ground-water heat pump

water-to-air heat pump using water pumped from a well, lake, or stream functioning as a heat source in heating mode and/or heat sink in cooling mode

Note 1 to entry: The temperature of the water is related to the climatic conditions and is generally constant within the range from 5 °C to 25 °C for deep wells.

3.4

ground-loop heat pump

brine-to-air heat pump using a brine solution circulating through a subsurface piping loop functioning as a heat source in heating mode and/or heat sink in cooling mode

Note 1 to entry: The heat exchange loop may be placed in horizontal trenches or vertical bores, or be submerged in a body of surface water.

Note 2 to entry: The temperature of the brine is related to the heat exchange load and climatic conditions and is generally within a range from –5 °C to 40 °C.

3.5

total cooling capacity

amount of sensible and latent heat that the equipment can remove from the conditioned space in a defined interval of time

Note 1 to entry: Expressed in units of watts.

3.6

net total cooling capacity

total cooling capacity with fan power adjustment

Note 1 to entry: Expressed in units of watts.

3.7

heating capacity

amount of heat that the equipment can add to the conditioned space in a defined interval of time

Note 1 to entry: Expressed in units of watts.

3.8

net heating capacity

heating capacity with fan power adjustment

Note 1 to entry: Expressed in units of watts.

3.9

rated voltage

voltage shown on the nameplate of the equipment

Note 1 to entry: Expressed in units of volts.

3.10

rated frequency

frequency shown on the nameplate of the equipment

Note 1 to entry: Expressed in units of Hz.

3.11

energy efficiency ratio

EER

ratio of the net total cooling capacity to the effective power input at any given set of rating conditions

Note 1 to entry: Expressed in units of watt per watt.

3.12

coefficient of performance

COP

ratio of the net heating capacity to the effective power input of the equipment at any given set of rating conditions

Note 1 to entry: Expressed in units of watt per watt.

3.13

standard air

dry air at 20,0 °C and at a standard barometric pressure of 101,325 kPa, having a mass density of 1,204 kg/m³

3.14

effective power input

Note 1 to entry: Expressed in units of watts.

3.15

latent cooling capacity

amount of latent heat that the equipment can remove from the conditioned space in a defined interval of time

Note 1 to entry: Expressed in units of watts.

3.16

sensible cooling capacity

amount of sensible heat that the equipment can remove from the conditioned space in a defined interval of time

Note 1 to entry: Expressed in units of watts.

3.17

brine

heat transfer liquid that has a freezing point lower than the freezing point of water

3.18

external static pressure difference

∆_pe

pressure difference measured between the air (or water/brine) outlet section and the air (or water/brine) inlet section of the unit, which is available for overcoming the pressure drop of any additional ducted air (or water/brine) circuit

Note 1 to entry: Expressed in units of pascals.

3.19

internal static pressure difference

∆_pi

pressure difference measured between the air (or water/brine) outlet section and the air (or water/brine) inlet section of the unit, which corresponds to the total pressure drop of all components on the air (or water/brine) side of the unit.

Note 1 to entry: Expressed in units of pascals.

3.20

fixed capacity heat pump

equipment which does not have possibility to change its capacity

Note 1 to entry: This definition applies to each cooling and heating operation individually.

3.21

two-stage capacity heat pump

equipment where the capacity is varied by two steps

Note 1 to entry: This definition applies to each cooling and heating operation individually.

3.22

multi-stage capacity heat pump

equipment where the capacity is varied by three or four steps

Note 1 to entry: This definition applies to each cooling and heating operation individually.

3.23

variable capacity heat pump

equipment where the capacity is varied by five or more steps to represent continuously variable capacity

Note 1 to entry: This definition applies to each cooling and heating operation individually.

3.24

standard rating conditions

operating conditions while establishing the standard rating net cooling and/or heating capacities

Note 1 to entry: These conditions correspond to an operation of the heat pump at full capacity, in relation to the source side.

3.25

application rating conditions

operating conditions while establishing additional cooling and/or heating capacities

Note 1 to entry: These conditions correspond to an operation of the heat pump at reduced capacity, in relation to the source side.

3.26

standard rating capacity

net cooling and/or heating capacity measured at standard rating conditions