Mechanical Engineering Commons^™

This paper describes a method to improve the accuracy of predicted space heating energy usage in existing

buildings simulated using eQuest, an energy modeling program. The method is an adjustment of actual energy

usage data using heating degree days (HDD) encoded in the inputted TMY weather file and short-term weather data

collected on site. TMY weather files, in many cases, do not give an accurate representation of actual site

temperatures around a building. An energy model that accurately reproduces energy use for an existing building

under pre-retrofit conditions allows greater confidence in the predicted impacts and effects of any proposed …

 

     The aim of this investigation is to verify and validate the modeling of fluid mechanics and heat transfer processes in a solar chimney power plant. The modeling uses a finite volume method applied to simulate the fluid flow and solve Navier-Stokes equations for the two- dimensional models of the plant. The representative size of the plant can be very large, and turbulence must be accounted for. Several turbulence models were applied in the model. The upstream velocity and power generated by the power plant system was calculated from the CFD results and compared with experimental results and available …