DOE/ORNL Heat Pump Design Model (HPDM)

Welcome to the Fingertip Fluid Properties (fProps) on the web

This website provides free fluid properties, easily accessible using your iPhone or other mobile devices, i.e. fingertips, with an INTERNET connection. It includes properties of psychrometric (air), coolant (water and glycols), refrigerants, and capacity calculation functions. It aims to support technicians and engineers to have a quick check of these properties when they work in the field. for example, installing a HVAC equipment. The main driver is to accelerate transition from conventional refrigerants having high global warming potential (GWP) to new low GWP refrigerants, to support professionals using these new refrigerants.

The user can specify the inputs of each property calculation module. An example case is provided for each individual module.

The wizard will guide you through the use of the property modules. The wizard includes numerous property modules in multiple categories. You are more than welcome to work with us and create other new modules or categories for your interest. If you have suggestions or find any bugs related to this property calculation tool, please contact the author, Bo Shen, shenb@ornl.gov.

Below, you can expand a category by clicking the triangle on the left, select an existing module and make your inputs (Customize Configuration).

Step-by-Step: Select a calculation module->Click "Customize Configuration"->Select refrigerant type if refrigerant property is needed->Click "Next"->Edit inputs->Click "Next"->Click "Run"->See results.

Total visits of fProps reached 3164 times.

Category / Configuration	Description
Refrigerant Properties
1.PtoDew	Calculate dew point temperature at given pressure
2.PtoBubble	Calculate bubble point temperature at given pressure
3.DewtoP	Calculate pressure at given dew point temperature
4.BubbletoP	Calculate pressure at given bubble point temperature
5.PTtoSuperheat	Calculate superheat degree at given pressure and temperature
6.PTtoSubcool	Calculate subcooling degree at given pressure and temperature
7.TSuptoP	Calculate pressure at given temperature and superheat degree
8.TSubtoP	Calculate pressure at given temperature and subcooling degree
9.PSuptoT	Calculate temperature at given pressure and superheat degree
10.PSubtoT	Calculate temperature at given pressure and subcooling degree
Psychrometric Properties
1.TdbTwb	Calculate air properties at given dry bulb and wet bulb temperatures
2.TdbRH	Calculate air properties at given dry bulb temperature and relative humidity
3.TdbTdew	Calculate air properties at given dry bulb temperature and dew point temperature
4.TdbW	Calculate air properties at given dry bulb temperature and specific humidity
5.TwbRH	Calculate air properties at given wet bulb temperature and relative humidity
6.TdewRH	Calculate air properties at given dew point temperature and relative humidity
7.TwbTdew	Calculate air properties at given wet bulb temperature and dew point temperature
8.RHW	Calculate air properties at given relative humidity and specific humidity
Coolant Properties
1.Water	Calculate water properties at given temperature
2.pGlycol	Calculate properties of propylene glycol-water at given temperature and salt weight concentration
3.eGlycol	Calculate properties of ethylene glycol-water at given temperature and salt weight concentration
4.sCholoride	Calculate properties of sodium chloride-water at given temperature and salt weight concentration
5.cCholoride	Calculate properties of calcium chloride-water at given temperature and salt weight concentration
6.mAlcohol	Calculate properties of methyl alcohol-water at given temperature and alcohol weight concentration
7.eAlcohol	Calculate properties of ethyl alcohol-water at given temperature and alcohol weight concentration
Capacity calculation
1.AirCapacity	Calculate air side capacity
2.CoolantCapacity	Calculate coolant side capacity
3.RefrigerantCapacity	Calculate refrigerant side capacity

Web version 0.9b

UT-Battelle, LLC (UT-Battelle), managing and operating the Oak Ridge National Laboratory (ORNL) under contract with the U.S. Department of Energy (DOE) developed the DOE/ORNL Heat Pump Design Model and related property functions "fProps" (The “Software”), which has been placed in the public domain.

THE SOFTWARE IS SUPPLIED BY UT-BATTELLE "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 UT-BATTELLE, CONTRIBUTORS, UNITED STATES GOVERNMENT, OR THE DOE 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.

NEITHER UT-BATTELLE, THE UNITED STATES GOVERNMENT, NOR THE DOE, NOR ANY OF THEIR EMPLOYEES, REPRESENTS THAT THE USE OF ANY SOFTWARE, INFORMATION, DATA, APPARATUS, PRODUCT, OR PROCESS DISCLOSED OR LICENSED WOULD NOT INFRINGE PRIVATELY OWNED RIGHTS.

This program was developed by the Oak Ridge National Laboratory , Building Technologies Research and Integration Center (BTRIC) under sponsorship of the Department of Energy (DOE) Program of Building Technologies.

Oak Ridge National Laboratory is managed by UT-Battelle for the US Department of Energy.

DOE/ORNL Fingertip Fluid Properties (fProps)

Welcome to the Fingertip Fluid Properties (fProps) on the web

Below, you can expand a category by clicking the triangle on the left, select an existing module and make your inputs (Customize Configuration).

NEITHER UT-BATTELLE, THE UNITED STATES GOVERNMENT, NOR THE DOE, NOR ANY OF THEIR EMPLOYEES, REPRESENTS THAT THE USE OF ANY SOFTWARE, INFORMATION, DATA, APPARATUS, PRODUCT, OR PROCESS DISCLOSED OR LICENSED WOULD NOT INFRINGE PRIVATELY OWNED RIGHTS.