Tim McDowell's profile - activity

Use the printegrator component to integrate the energy output from the collector and print to a file. Look at the SDHW e

The change in the parameter value is causing a illegal floating point operation in the code. It is impossible to know wh

You can run a parametric study through Simulation Studio. See section 2.8.3.6 of the 02-SimulationStudio volume of the T

Type144 takes a control signal to tell it if it is on or off. Have you set up a thermostat that sends a control signal

Trnsys has three levels of notifications. A "notice" is for information only, a "warning" may be a potential problem, an

The typical heat pump models in TRNSYS take a control signal and the entering conditions and calculate the leaving condi

There are two version of the Type534 proforma. One uses a plugin application to allow user input of all of the componen

If the components do not allow for your situation, then you will need to modify the source code for the component model.

Type919 uses data files with normalized performance data to model the performance of a Water-source Heat Pump. When you

I would start with various BiPV models in the TESS Electrical Component Library and select the one most appropriate for

You are not clear about which version of TRNSYS you are using, but it looks like you have access to the TESS Libraries.

Of course you can model it in TRNSYS 17. You just don't have access to the specific VAV components or templates that co

The VAV components and templates are only available with TRNSYS 18.

No, the Tutorials volume in the TRNSYS18 documentation set.

In TRNSYS 18 there are two options for modeling air handlers. You can build-up the air handler component by component u

In TRNSYS 18, Cooling Tower component Type161 tries to control the leaving water temperature by modifying the flow on th

To get heating and cooling loads you need to define heating and cooling types for your zones. Internal gains can be sch

The aquastat controller in heating mode (Type106) with a setpoint of 55 and a deadband of 10 should give you the control

The internal heat exchangers in the tank models in TRNSYS are intended for situations where hot liquid is circulated ins

The radiation processor component has a mode parameter than indicates what information will be input to the component to

TRNSYS has a radiation processor component that calculates direct/diffuse horizontal and tilted surface solar radiation.

TRNSYS makes use of the Windows API to call the component models. To run TRNSYS in the cloud you need to set-up a virtu

There are a few techniques you can use to make the workspace less cluttered: Assign your components to layers that make

The demo version of TRNSYS contains all of the standard package components. It is restricted some in its functionality.

I did not do any work on the creation of the DOE reference buildings. There have been a number of publications concernin

Calibrating a TRNSYS simulation is no different than calibrating a simulation with any software. You need to compare yo

For this type of error you will get the best technical support by contacting your TRNSYS distributor directly.

You should contact your TRNSYS distributor directly. They should be able to make the files available to you. The weath

The BCVTB-TRNSYS components are all compiled to work with the 32-bit version of TRNSYS. The 32-bit version of TRNSYS 18

There are not any official video tutorials for TRNSYS. The documentation is the only official help.

There are a couple of tutorials in the documentation that step you through the creation of building models and HVAC syst

Since some variables need to be defined as inputs in your EES model when coupled with TRNSYS, the actual EES code is dif

You should use pump components and flow diverter components to control the flow in you system.

There are many ways of accomplishing this type of control in TRNSYS. The first question is how are you determining that

Latent gains are added in Type56 as a humidity gain in kg/h. The input is on the gain definition window in TRNBuild.

I will send you the link for the input files. Remember that ASHRAE 140 is a method of test and the non-analytical tests

TRNSYS 18 has been run with all of the Class I tests. The files included from ASHRAE are the files originally used to c

The Section 7 tests in ASHRAE Standard 140 are Class II tests used for software specific to residential modeling. TRNSY

Without looking at the project it is impossible to know exactly what is being plotted on the screen. However, it is mor

The return and outside air flow rates are a function of your system design and not the heat pump. A single-speed heat p

Your question is too vague. It is definitely possible to model your building using TRNSYS and TRNBuild. So I assume th

TRNSYS does not perform automatic sizing of equipment and so does not have a mechanism for using a design day weather fi

There are a few things to check:

• Make sure that your version of TrnOpt is compatible with GenOpt 2.0.0.
• Make sure that you have followed the directory format exactly as displayed in the manual - either including the \ or not including the \ at the end.
• Make sure that you have administrator permissions for all of the folders.

My comment was for the data in the weather file and not for EnergyPlus' specific interpretation of the weather file. If you look at the definition of the global horizontal solar radiation in TMY3 it is "Total amount of direct and diffuse solar radiation received on a horizontal surface during the 60-minute period ending at the timestamp" and the units are Watt-hour per square meter. So if you are comparing back to the weather file this is what you are comparing to.

The solar radiation in the data file is not shifted by half an hour. It is given as the sum of the incident radiation over the previous hour. Some programs do treat this as the instantaneous value at the half hour, but this does not return the same sum as from the data file. I suspect that this is the difference between the values that you are seeing.