View the full list of KPIs
Comfort
All comfort outputs are for the whole building using an area-weighted average of discomfort calculated for each zone. Note that the comfort-related outputs are termed "discomfort" because by convention DesignBuilder aims to minimise objectives and in the context of standardising optimisation outputs it is better to minimise discomfort than to maximise comfort.
- Discomfort (sum clo) - total discomfort hours when summer clothes are worn (see comments below for Discomfort (all clo))
- Discomfort (win clo) - total discomfort hours when winter clothes are worn (see comments below for Discomfort (all clo))
- Discomfort (all clo) - total discomfort hours when winter or summer clothes are worn based on ASHRAE 55 method. Note that this objective is not the same as the building level aggregation method used by EnergyPlus in the Summary output html data which adds up hours in which any zone in the building is uncomfortable. If you would like to only consider occupied hours in your comfort analysis then make sure this option is set in the main Simulation options dialog.
- Discomfort Summer ASHRAE 55 Adaptive 80% Acceptability - Reports whether the operative temperature falls into the 80% acceptability limits of the adaptive comfort in ASHRAE 55-2010 during summer occupied hours. A value of 1 means within (inclusive) the limits, i.e. the zone operative temperature is no more than 2.5°C from than the ASHRAE 55 Adaptive model temperature. A value of 0 means outside the limits (i.e. uncomfortable), and a value of -1 means not applicable, i.e. the running average outdoor air temperature is below 10°C.
- Discomfort Summer ASHRAE 55 Adaptive 90% Acceptability - Reports whether the operative temperature falls into the 90% acceptability limits of the adaptive comfort in ASHRAE 55-2010 during summer occupied hours. A value of 1 means within (inclusive) the limits, i.e. the zone operative temperature is no more than 3.5°C from than the ASHRAE 55 Adaptive model temperature. A value of 0 means outside the limits (i.e. uncomfortable).
- Discomfort Summer CEN 15251 Adaptive Category I - reports whether the operative temperature falls into the Category I (90% acceptability) limits of the adaptive comfort in the European Standard EN15251-2007 during occupied hours when the running mean outdoor air temperature is higher than 10°C. A value of 1 means within (inclusive) the limits, a value of 0 means outside the limits.
- Discomfort Summer CEN 15251 Adaptive Category II - reports whether the operative temperature falls into the Category II (80% acceptability) limits of the adaptive comfort in the European Standard EN15251-2007 during occupied hours when the running mean outdoor air temperature is higher than 10°C. A value of 1 means within (inclusive) the limits, a value of 0 means outside the limits.
- Discomfort Summer CEN 15251 Adaptive Category III - reports whether the operative temperature falls into the Category III (65% acceptability) limits of the adaptive comfort in the European Standard EN15251-2007 during occupied hours when the running mean outdoor air temperature is higher than 10°C. A value of 1 means within (inclusive) the limits, a value of 0 means outside the limits.
Cost
- Capital cost (Capex) - total construction cost as reported on the Cost and Carbon tab.
- Operational cost (Opex) - annual cost of fuel used to operate the building.
Daylight
No daylight-specific options are available in DesignBuilder v4.
Energy and Loads
- Net site energy is the net energy consumed on site (total site fuel consumption minus any on-site generation). For Simple HVAC, this value is affected by the COP values set on the HVAC tab and is calculated as the sum of the fuel consumption minus any generation. In Detailed HVAC it is the value reported in the Summary ABUPS report, i.e. the sum of the fuel consumption minus generation.
- Net primary energy is the net primary energy due to energy consumed on site (total minus any on-site generation). This output should only be selected when using Detailed HVAC.
- Total site energy is the total gross energy consumed on site. For Simple HVAC, this value is affected by the COP values set on the HVAC tab and is calculated as the sum of the fuel outputs. In Detailed HVAC it is the value reported in the Summary ABUPS report which is also the same as the sum of the fuel consumption reported in the DesignBuilder results.
- Total primary energy is the total primary energy due to energy consumed on site. This output should only be selected when using Detailed HVAC.
- Heating (Electricity) - electricity consumption used in heating
- Heating (Gas) - gas consumption used in heating
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Heating (Oil) - oil consumption used in heating
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Heating (Solid fuel) - solid fuel consumption used in heating
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Heating (Bottled Gas) - bottled gas (e.g. propane) consumption used in heating
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Heating (Other fuels) - Other fuels (e.g. biofuel) consumption used in heating
- Cooling (Electricity) - electricity consumption used in cooling
- Cooling (Gas) - gas consumption used in cooling
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Cooling (Oil) - oil consumption used in cooling
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Cooling (Solid fuel) - solid fuel consumption used in cooling
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Cooling (Bottled Gas) - bottled gas (e.g. propane) consumption used in cooling
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Cooling (Other fuels) - other fuel (e.g. biofuel) consumption used in cooling
- DHW (Electricity) - electricity consumption used in DHW
- DHW (Gas) - gas consumption used in DHW
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DHW (Oil) - oil consumption used in DHW
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DHW (Solid fuel) - solid fuel consumption used in DHW
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DHW (Bottled gas) - bottled gas (e.g. propane) consumption used in DHW
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DHW (Other fuels) - other fuel (e.g. biofuel) consumption used in DHW
- AHU heating energy - energy supplied by the AHU heating coil when using Detailed HVAC data.
- Cooling energy - sensible + latent cooling transfer to the supply air from the AHU cooling coil + any single zone unitary and fan coil units in the building.
- Fans - fan energy consumption
- Pumps - pump energy consumption
- Preheat energy - energy supplied by preheat coils to temper the outside air before it enters the outside air mixing box when using Detailed HVAC data.
- Reheat energy - total reheat energy
- Radiant heater energy - total radiant heater energy
- DHW - total DHW energy
- Lights energy - total lighting energy
- Process energy - total process energy
- Catering energy - total catering gains over the year
- Task/display lighting gains - total task + display lighting gains over the year
- General lighting gains- total general lighting gains over the year
- Misc gains - miscellaneous gains over the year
- Mach gains - process gains over the year
- Cooking gains - catering gains over the year
- Computer gains - computer gains over the year
- Occupancy gains - occupancy gains over the year
- Solar gains internal Windows - solar gains through interior windows over the year
- Solar gains external Windows - solar gains through exterior windows over the year
- Plant heating - total zone sensible heating
- Plant cooling - total zone sensible cooling
- Lighting - total lighting energy consumption
- System Fans - System fan energy consumption
- System Pumps - System pump energy consumption
- System Misc - System miscellaneous energy consumption
- Electricity - total annual electricity consumption
- Gas - total annual gas consumption
- Oil - total annual oil consumption
- Solid - total annual solid fuel (typically coal) consumption
- Bot Gas - total annual bottled gas fuel consumption
- Other - total annual other fuel consumption
- Heat Rejection - heat rejection by the chillers, e.g. through cooling towers, ground heat exchangers, fluid coolers.
- Generated Electricity - total electricity generated by solar PV and wind.
- Sys sens heating -
- Sys sens cooling -
- Sys lat heating -
- Sys lat cooling -
- Room units -
- Air heating coils -
- Air cooling coils -
- Heat rec sens heat -
- Heat rec total heat -
- Heat rec sens cool -
- Heat rec total cool -
- Chiller load -
- Room Electricity -
- Room Gas -
- Room Oil -
- Room Solid -
- Room Bottled Gas -
- Room Other -