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HVAC system optimal start control. Operational fault modeling for air economizer control sensor offset. Output Component model sizing diagnostics for easily comparing user-specified values to autosized values. Utilities WeatherConverter produces design day files for appropriate locations. Mac General Speed improvements and many bug fixes throughout.

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Updated life cycle costing price escalation data. Input Added support for sub-hourly values and interpolation for schedules that are input using a file Schedule:File object. Zone and Surface Models Added option to choose timestep-integrated calculations for solar, shading, and daylighting for use with dynamic facade controls. New central chiller heater system for applications such as ground source heat pump systems.

New plant model object PlantComponent:TemperatureSource for a known temperature source of supply fluid, such as for river, well, or seawater once through cooling. Improved electric chiller condenser heat recovery modeling to include autosizing, capacity limits, inlet temperature limit, outlet temperature control, and improved chiller models to account for higher rejection temperatures.

Improved the equation-fit, single-speed, water-to-air heat pump models to include new options for cycling or constant fluid flow operation. The zone exhaust fan model was improved to allow varying flow rates, controlling on a minimum temperature limit, selecting how availability managers behave and declaring what portion of makeup air is balanced.

Improved low temperature radiant hydronic systems to include options for tubing circuit length sizing calculation and multiple tubing circuits. Improved horizontal trench ground heat exchanger object with simpler interface to piping system objects. Output Throughout the program the specific names used to describe output variables were completely overhauled to be clearer, to use consistent terminology, and to use the same names across similar components.

New XML style option for all tabular reports. New LEED summary predefined tabular report. Documentation and Guides Documentation has been updated for all documents. New Features in Version 7. Data sources documented.


Input Corrected or clarified the units for various input fields. New detailed models for variable-speed DX cooling and heating coils. Zone sizing expanded to add method for the design supply air temperature to be based on differences with zone temperature. Detailed ice storage model expanded for inside melt systems to start charging from a bare coil.

Improved warning message content when HVAC simulation maximum iterations limit is exceeded. Added options for humidity setpoints and desuperheater in HVACTemplate for dedicated outdoor air systems. Added options for supplementary heating coil to be hot water in HVACTemplates for heatpump and unitary equipment. Added options for substituting specific chiller, boiler, and cooling tower objects for the defaults normally generated by HVACTemplates. Controls and User Functions System availability managers expanded to control operation of additional types of zone equipment including: fan coil units, zone energy recovery ventilators, zone outdoor air units, variable refrigerant flow terminals, and ventilated slabs.

Energyplus v1-1 Ashrae 140 Bestest

Availability schedule added to daylighting controls. Utilities Ep-Launch added controls for multiprocessor behavior when running simulations IDF Editor enhancements include double precision unit conversions and conversion corrections. Weather Converter improvements including solar conversions.

Ep-Macro improved to be more robust. Output Error messages improved for recurring errors Tabular reports improved formatting and clean up Documentation and Guides Documentation has been updated for all documents. Linux Ubuntu The solution for inside face surface temperatures was threaded using OpenMP technology. The Design Day object was restructured and allows finer control over humidity conditions.

Epub Energyplus V1 1 Ashrae Bestest

The Run Period object was extended to include features useful for real-time and real-weather simulations. Datasets New equipment performance data set for different air-cooled chillers—see the file AirCooledChiller. Input Corrected or clarified the units for various input fields Zone and Surface Models Many new output variables were added to expand the reporting available for surface heat transfer model results.

The modeling of internal gains was revised and improved to facilitate integrating HVAC equipment skin losses and the zone thermal model. Losses from plant pumps can now be added to thermal zones. Natural and Mechanical Ventilation New comprehensive modeling of the concentration of a generic gaseous contaminant in zone air including internal emission sources and ventilation controls.

Added system-level zone maximum outdoor air fraction for ventilation rate procedure for sizing and annual calculations. A new coil system was added for modeling air-to-air heat pump coils in built-up air handlers, outdoor air systems, and zone outdoor air units.

Fan-powered induction air terminal units can now draw secondary air from plenums. Added pumping options, piping configurations, fluid types, and additional controls to HVACTemplate plant loops. Added the ability to use hot water or steam coils in various HVAC equipment that have options for different types of heating coils. Added two-stage compression with intercooling to the detailed commercial refrigeration cycle model. New model to reset condenser loop temperature setpoints using predetermined curves that reduce net energy consumption for the chiller and cooling tower plant. New "ideal" model to reset condenser loop temperature setpoints using a search algorithm to find the near-optimal setpoint at a given timestep which gives the minimum total chiller, cooling tower, chilled water pump and condenser water pump power consumption.

The heat pump water heater model can now use a stratified thermal tank. Added a new model for variable speed, water-to-air heat pumps. Users can now define their own component models using new IDF objects that serve as generic holders for zone forced-air units, coils in an air handler, zone air terminal units, or plant components. New EMS Actuators were added including: surface construction, surface outside boundary conditions, and refrigeration system condenser minimum temperature limit.

Output Multiple daylight illuminance maps can now be generated for a single zone. Energy meters have been added to output summary reports. Linux Ubuntu 9. EnergyPlus V 7. New input data set for exhaust-fired chiller heater model see ExhaustFiredChiller. Input Steam is now a "built-in" fluid property. Zone Floor Area can be an input—overrides the calculated amount. Conduction Transfer Function model revised to improve modeling of mass-less material layers. OtherSideCoefficients model extended to provide controlled surface outside temperature with schedule and limits. Design day weather data generation procedures upgraded for clear sky model and wet-bulb temperature profiles. Conduction Finite Difference heat transfer model now includes options for solution method and to control node spatial resolution, relaxation factor, and convergence criteria.

Improved convergence checks for initial warmup days.

Table of contents

Natural and Mechanical Ventilation AirflowNetwork solver enhanced for speed. Consolidated outdoor air inputs in HVAC models to common design object wherever outdoor air rates are specified. New proportional control for CO2-based demand controlled ventilation.