PK rWd d add_hpwh/LICENSE.mdOpenStudio(R), Copyright (c) 2008, 2023 Alliance for Sustainable Energy, LLC. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Redistribution of this software, without modification, must refer to the software by the same designation. Redistribution of a modified version of this software (i) may not refer to the modified version by the same designation, or by any confusingly similar designation, and (ii) must refer to the underlying software originally provided by Alliance as “OpenStudio®”. Except to comply with the foregoing, the term “OpenStudio®”, or any confusingly similar designation may not be used to refer to any modified version of this software or any modified version of the underlying software originally provided by Alliance without the prior written consent of Alliance. 4. The name of the copyright holder(s), any contributors, the United States Government, the United States Department of Energy, or any of their employees may not be used to endorse or promote products derived from this software without specific prior written permission from the respective party. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND ANY CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S), ANY CONTRIBUTORS, THE UNITED STATES GOVERNMENT, OR THE UNITED STATES DEPARTMENT OF ENERGY, NOR ANY OF THEIR EMPLOYEES, BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. PK rW n^ add_hpwh/README.md ###### (Automatically generated documentation) # Add HPWH for Domestic Hot Water ## Description This measure adds or replaces existing domestic hot water heater with air source heat pump system and allows for the addition of multiple daily flexible control time windows. The heater/tank system may charge at maximum capacity up to an elevated temperature, or float without any heat addition for a specified timeframe down to a minimum tank temperature. ## Modeler Description This measure allows selection between three heat pump water heater modeling approaches in EnergyPlus.The user may select between the pumped-condenser or wrapped-condenser objects. They may also elect to use a simplified calculation which does not use the heat pump objects, but instead used an electric resistance heater and approximates the equivalent electrical input that would be required from a heat pump. This expedites simulation at the expense of accuracy. The flexibility of the system is based on user-defined temperatures and times, which are converted into schedule objects. There are four flexibility options. (1) None: normal operation of the DHW system at a fixed tank temperature setpoint. (2) Charge - Heat Pump: the tank is charged to a maximum temperature using only the heat pump. (3) Charge - Electric: the tank is charged using internal electric resistance heaters to a maximum temperature. (4) Float: all heating elements are turned-off for a user-defined time period unless the tank temperature falls below a minimum value. The heat pump will be prioritized in a low tank temperature event, with the electric resistance heaters serving as back-up. ## Measure Type ModelMeasure ## Taxonomy ## Arguments ### Remove existing water heater? **Name:** remove_wh, **Type:** Boolean, **Units:** , **Required:** true, **Model Dependent:** false ### Select 40+ gallon water heater to replace or augment All can only be used with the 'Simplified' model **Name:** wh, **Type:** Choice, **Units:** , **Required:** true, **Model Dependent:** false ### Set hot water tank volume [gal] Enter 0 to use existing tank volume(s). Values less than 5 are treated as sizing multipliers. **Name:** vol, **Type:** Double, **Units:** gal, **Required:** false, **Model Dependent:** false ### Select heat pump water heater type **Name:** type, **Type:** Choice, **Units:** , **Required:** true, **Model Dependent:** false ### Select thermal zone for HP evaporator Does not apply to 'Simplified' cases **Name:** zone, **Type:** Choice, **Units:** , **Required:** true, **Model Dependent:** false ### Set heat pump heating capacity [kW] **Name:** cap, **Type:** Double, **Units:** , **Required:** true, **Model Dependent:** false ### Set heat pump rated COP (heating) **Name:** cop, **Type:** Double, **Units:** , **Required:** true, **Model Dependent:** false ### Set electric backup heating capacity [kW] **Name:** bu_cap, **Type:** Double, **Units:** , **Required:** true, **Model Dependent:** false ### Set maximum tank temperature [F] **Name:** max_temp, **Type:** Double, **Units:** , **Required:** true, **Model Dependent:** false ### Set minimum tank temperature during float [F] **Name:** min_temp, **Type:** Double, **Units:** , **Required:** true, **Model Dependent:** false ### Set deadband temperature difference between heat pump and electric backup [F] **Name:** db_temp, **Type:** Double, **Units:** , **Required:** true, **Model Dependent:** false ### Select reference tank setpoint temperature schedule **Name:** sched, **Type:** Choice, **Units:** , **Required:** true, **Model Dependent:** false ### Daily Flex Period 1: Applies every day in the full run period. **Name:** flex0, **Type:** Choice, **Units:** , **Required:** true, **Model Dependent:** false ### Use 24-Hour Format **Name:** flex_hrs0, **Type:** String, **Units:** , **Required:** false, **Model Dependent:** false ### Daily Flex Period 2: Applies every day in the full run period. **Name:** flex1, **Type:** Choice, **Units:** , **Required:** true, **Model Dependent:** false ### Use 24-Hour Format **Name:** flex_hrs1, **Type:** String, **Units:** , **Required:** false, **Model Dependent:** false ### Daily Flex Period 3: Applies every day in the full run period. **Name:** flex2, **Type:** Choice, **Units:** , **Required:** true, **Model Dependent:** false ### Use 24-Hour Format **Name:** flex_hrs2, **Type:** String, **Units:** , **Required:** false, **Model Dependent:** false ### Daily Flex Period 4: Applies every day in the full run period. **Name:** flex3, **Type:** Choice, **Units:** , **Required:** true, **Model Dependent:** false ### Use 24-Hour Format **Name:** flex_hrs3, **Type:** String, **Units:** , **Required:** false, **Model Dependent:** false PK rWd