Type

Name

BS EPG
The name of a generator is generated automatically based on its the type and subtype. After the selecting the correct type and subtype, this name can be modified as desired.

System

BS EPG

The system specifies what the generator is used for.

§ Heat generator for heating

§ Cold generator for cooling

§ Domestic hot water generator for domestic hot water

§ Combi heat generator for heating and domestic hot water

Location of the generator

EPG
The location of the generator can be indicated here. This location is only taken into account for individual boilers for which the efficiency is determined flat rate. The location does not make a difference for all other generators. The option 'Inside zone’ indicates the generator is ‘located within the boundaries of the EPG calculation’. For the other options the calculations are performed with the generator 'placed outside the boundary of the EPG calculation'.

§ Inside zone generator is placed INSIDE the boundary of the EPC calculation.

§ Inside building and outside zone generator is placed OUTSIDE the boundary of the EPC calculation

§ Against building generator is placed OUTSIDE the boundary of the EPC calculation

§ Inside parcel generator is placed OUTSIDE the boundary of the EPC calculation

§ Outside parcel generator is placed OUTSIDE the boundary of the EPC calculation

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Preferent generator

EPG

This box indicates whether the generator within the system is default. This option is only relevant if multiple generators have been defined for heat, cold, or domestic hot water; in case only one generator has been defined it will automatically be the default one. If multiple generators have been defined for heat, cold, or domestic hot water, but no default generator has been specified, then a default generator is chosen in accordance with the rules in the NEN 7120. If the rules are violated in specifying the default generator, a message is displayed by the EPG calculation.

Type

 EPG
The type of the generator can be selected from a presented list of options.  This list is generated depending on the configuration of the generation (individual or collective) and the selected system (heat, cold, domestic hot water, or combi). An overview of the generator for different configurations and systems is presented below:

Heat generator (individual and collective systems)

§ Boiler for heating.

§ Heat pump for heating; this is a device which raises sustainable heat from the near environment from a low to a high and useful temperature level. This heat can be extracted from the environment: the soil, water, air, waste heat, etc. Driving the heat pump only requires a limited amount of primary energy. By utilizing sustainable energy, the heat pump can save up to about 50% primary energy compared to a boiler. The energy source only heats up the central heating. (Source and more information: SenterNovem)

§ Cogeneration (CHP / micro-CHP), or CHP boiler, for heating; this is a boiler which produces electricity in addition to heat in case heating is required in the building. The energy is produced from the same energy source. The energy source may be natural gas, biogas, propane, butane, or hydrogen. Besides the economic benefit to the consumer due to lower energy costs, (micro) CHP also benefits the environment as the energy consumption and CO2 emission are reduced. The energy source only heats up the central heating. (Source and more information: SenterNovem)

§ Solar heating system for heating.

§ External heat source for heating, which is also referred to as ‘heat distribution’ or ‘district heating’; this uses waste heat from power plants (CCGT / gas), waste incineration plants, industries and biomass plants. This heat is then transferred to the target location using a distribution network such as water. The energy source only heats up the central heating. (Source and more information: SenterNovem)

Cold generator (individual and collective systems)

§ Compression chiller, or heat pump, for cooling; this is a chiller in which a compressor draws in a cooling agent at a low pressure. Due to compression, the pressure of the cooling agent is elevated resulting in a rising temperature. The compressor is driven electrically. The hot cooling gas is subsequently transferred to the condenser and condensed into a liquid state. Then the pressure is reduced in the expansion valve after which the liquid cooling agent evaporates in the evaporator at this low pressure. During this process heat is extracted from the water (indirect expansion cooling), or from the air (direct expansion cooling). So heat is extracted (=cooling) from the environment (water or air). This heat is deposited into e.g. the outside air in the condenser.  (Source: SenterNovem)

§ Absorption chiller for cooling purposes; this is a chiller which is driven with waste heat from a sufficiently high temperature level (> 110 ° C). This may be e.g. heat released by the production of electricity (building-related CHP) or district heating (external heat delivery). The use of primary energy in an absorption chiller is about twice as high compared to a compression chiller at the same cooling capacity. However, the noise production is significantly lower, meaning the absorption chiller may be a viable option in case severe requirements on the noise level apply. (Source: SenterNovem)

§ Cold storage or soil cooling without the use of a chiller. The heat pump is used for passive cooling rather than active cooling.

§ Dew point cooling

§ External cold source for cooling

Domestic hot water generator (individual systems)

§ Gas water heater which is an individual boiler for domestic hot water

§ Kitchen geyser which is an individual geyser for domestic hot water. This is a device which can deliver hot water, enough to heat up a large amount of water to do e.g. the dishes.

§ Electric water heater which is an individual electric water heater for domestic hot water

§ Heat pump water heater which is an individual heat pump water heater for domestic hot water using ventilation exhaust air as its supply source. A heat pump water heater contains a thermal barrel in which a supply of hot water is kept. The heating of this water content is performed using a heat pump.

§ Cogeneration (CHP / micro-CHP) for domestic hot water

§ Solar water heater for domestic hot water

Combi heat generator (individual systems)

§ Combi boiler (gas) for heating and domestic hot water

§ Combi heat pump for heating and domestic hot water

§ Cogeneration (CHP / micro-CHP) for heating and domestic hot water

§ Solar combi-system solar water heater for heating and domestic hot water

§ External heat source for heating and domestic hot water

Domestic hot water generator (collective systems)

§ Gas water heater contains a tank in which a supply of hot water is kept. Heating of the supply water is performed using gas. Gas water heaters and electric water heaters are used directly heated storage barrels for hot domestic water in collective systems. A combination with other generators is not possible in this case. A sub-screen ‘Storage tanks’ appears in which the volume of the storage barrels can be specified. The volume is applied to determine the default generator in case multiple gas water heaters and / or electric water heaters have been defined.

§ Electric water heater contains a storage tank in which a supply of hot water is kept. Heating of the supply water is performed using electricity. Gas water heaters and electric water heaters are used directly heated tanks for hot domestic water in collective systems. A combination with other generations is not possible in this case. A sub-screen ‘Storage tanks’ appears, see Gas water heater.

§ Heat exchanger indirectly heated storage tanks is a collective system for domestic hot water with indirectly heated storage tanks which may be combined with a boiler, heat pump, CHP, or external heat delivery. A sub-screen ‘Storage tanks’ appears in which the insulation thickness of the storage barrels can be specified (flat rate method only; detailed method in not yet available).

§ Heat delivery system (residential) Heat for domestic hot water can be distributed from the system of block heating using a delivery system for domestic hot water in case a heating system with block heating is applied. Both the generators for the collective heating system and the delivery system for domestic hot water need to be specified.

§ Boiler for hot water. This generator can be used only in combination with the heat exchanger in a system with indirectly heated storage barrels.

§ Heat pump for domestic hot water. This generator can be used only in combination with the heat exchanger in a system with indirectly heated storage barrels.

§ Cogeneration (CHP) for domestic hot water. This generator can be used only in combination with the heat exchanger in a system with indirectly heated storage barrels.

§ Solar heating system for domestic hot water

§ External heat source for domestic hot water. This generator can also be applied in combination with a heat exchanger in a system with indirectly heated storage tanks.

Combi heat generator (collective systems)

§ Boiler for heating and domestic hot water. This generator can be used only in combination with the heat exchanger (domestic hot water) in a system with indirectly heated storage barrels for domestic hot water.

§ Heat pump for heating and domestic hot water. This generator can be used only in combination with the heat exchanger (domestic hot water) in a system with indirectly heated storage barrels for domestic hot water.

§ Cogeneration (CHP) for heating and domestic hot water. This generator can be used only in combination with the heat exchanger (domestic hot water) in a system with indirectly heated storage barrels for domestic hot water.

§ Solar heating system for heating and domestic hot water. This option cannot be included in the EPG calculation.

§ External heat source for heating and domestic hot water. This generator can be used only in combination with the heat exchanger (domestic hot water) in a system with indirectly heated storage barrels for domestic hot water.

Generator with pilot

 EPG
In case the generator type is a boiler for heating, it can be specified whether this boiler contains a pilot. If so, additional thermal auxiliary energy use is charged.

Heat certificate

 EPG
In case the generator type is a boiler for heating and / or domestic hot water, its heat certificate can be specified. This certificate affects the calculations of the flat rate efficiency.

§ Conventional efficiency boiler with an efficiency of 70-80%. The source only heats the central heating.

§ Improved efficiency boiler is a boiler stoked with gas which has a full load efficiency of at least 88.7% on lower value. The source heats only the central heating.

§ High efficiency 100 boiler is a boiler stoked with gas which has a partial load efficiency of at least 100% on lower value. In The Netherlands it may also be a boiler which obtained the required quality mark from the Keuringseisen van Gastoestellen (Gaskeur CV-HR). The source heats only the central heating.

§ High efficiency 104 boiler is a boiler stoked with gas which has a partial load efficiency of at least 104% on lower value. In The Netherlands it may also be a boiler which obtained the required quality mark from the Keuringseisen van Gastoestellen (Gaskeur CV-HR). The source heats only the central heating.

§ High efficiency 107 boiler is a boiler stoked with gas which has a partial load efficiency of at least 107% on lower value. In The Netherlands it may also be a boiler which obtained the required quality mark from the Keuringseisen van Gastoestellen (Gaskeur CV-HR). The source heats only the central heating. (Source:SenterNovem)

Modulating power control

 EPG
A power control can be specified here in the case of a generator for heating. The power control effects charging the auxiliary energy use of the generator.

Lower modulation

 EPG
If modulating power control has been applied, then the lower level of modulation can be specified in the range from 0.4 - 1.0. In case the specified limit is below 0.4, then the standard of 0.4 is assumed.

Energy

 EPG
In case of a boiler for heating, it should be specified whether this boiler is fired by gas or oil. This choice can be made only if the heat certificate is ‘Conventional efficiency’.

§ Gas gas-fired boiler

§ Oil oil-fired boiler

In case of a compression chiller (cold generator) it should be specified whether it concerns a compression chiller driven by a gas engine or by electricity.

§ Gas engine gas engine driven compression chiller (or heat pump)

§ Electricity electrically driven compression chiller (or heat pump)

Specifications

 EPG
The specifications of a compression chiller (cold generator) are specified from this selection list. The flat rate efficiency is determined based on these specifications. Additionally, the auxiliary energy use to dispose the cooling power of the cold generation is determined using these specifications. The specification ‘high temperature delivery system’ is not included in the selection list as this is passed on to the cooling system in the resource ‘Distribution’.

§ Not specified

§ Dry cooler

§ Evaporation condenser

§ Wet cooling tower

§ Low temperature cold source

Closed circuit

 EPG
In case of a compression chiller or absorption chiller, this box indicates whether the wet cooling tower or evaporation condenser is a closed circuit. This property is taken into account to determine the auxiliary energy required to dispose the cooling power.

Pump(s) / ventilator(s) with speed control

 EPG
This box indicates that the pumps of the cooling water circuit between the cooling machine and cooling source, or the ventilators of the air-cooled condensers or cooling towers, have speed control. This property affects the determination of auxiliary energy required for the generation of the cooling system.

Custom thermal conversion factor

 EPG
For the gas-driven compression chiller you may deviate from the flat rate thermal conversion factor by manually specifying its value.

Shaft power

EPG
The shaft power of the engine of the gas-driven compression chiller should be specified in order to determine the thermal power of the cold generator.

Air-water heat pump

 EPG
Checking this box indicates the compression chiller is an air-water heat pump. This option is not included in the EPG calculation; however, it is passed to the EPCheck program. This program is used to easily assess whether the EPG calculation contains major errors.

Water flow

EPG
In case cold storage is applied as cold generator, the flow of groundwater or the flow through the soil heat exchangers should be specified to determine the thermal cooling power.

Certificate domestic hot water

 EPG
The certificate for domestic hot water should be specified for the (combi) boiler or hot water system in order to determine the flat rate efficiency of the (combi) boiler.

§ No: no certificate applicable;

§ CW: certificate comfort water is applicable;

§ HRww: certificate high efficiency hot water is applicable.

Application class

 EPG
The Gaskeur-CW-comfort class (Dutch) certificate should be specified for a (combi) boiler or hot water system. This certificate is applied to determine the flat rate efficiency of the (combi) boiler.

§ Comfort class 1 'sink' for kitchen use only.

§ Comfort class 1* is equivalent to Comfort class 1 with the addition night shower tapping of Comfort class 2 of 3.5 dm³/min

§ Comfort class 2 certificate high efficiency is applicable

§ Comfort class 3 domestic hot water flow of at least 6 dm³/min at 60º, and filling a bath tub with 100 dm³ water at 40º within 12 min.

§ Comfort class 4 domestic hot water flow of at least 7.5 dm³/min at 60º, and filling a bath tub with 120 dm³ water at 40º within 11 min.

§ Comfort class 5 domestic hot water flow of at least 7.5 dm³/min at 60º, and filling a bath tub with 150 dm³ water at 40º within 10 min.

§ Comfort class 6 domestic hot water flow of at least 7.5 dm³/min at 60º, and filling a bath tub with 200 dm³ water at 40º within 10 min.

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