Energy Simulation Modelling Dubai, UAE

Energy Simulation Programs

As the regulation for energy efficiency are being propelled forward, services, such as, energy modelling and building simulation are being sought out to provide valuable information about the facility’s energy use and operating cost. Energy models are effective tools used to review energy consumption and operating energy performance in new buildings and retrofits for regulatory compliance and green certifications.

EMergy’s energy modelling and simulation capabilities focus on the energy consumption process by all users in buildings, and the life cycle costs of energy related equipment, such as, HVAC, lighting, etc. With the use of comprehensive algorithms, energy models deliver relevant and practical insights on a building’s energy usage to help guide property owners to make informed decisions. It is also beneficial for calculations of energy savings, payback and return of investment of energy conservation measures with the aim to illustrate savings for improving indoor environments and energy efficiency in buildings.

Energy modelling is commonly carried out to:

  • Predict energy consumption and energy costs.
  • Estimate annual CO2
  • Identify peak demands.
  • Compare different energy efficiency options and life cycle payback.
  • Fulfil building codes and sustainability certification requirements.

Energy Simulation Modelling

Energy Simulation Modelling
Energy simulation Modelling is a computer-based analytical process that helps building owners and designers to evaluate the energy performance of a building and make it more energy efficient by making necessary modifications in the design before the building is constructed.The building simulation includes the building location, local climate data, building orientation, and occupancy and operational schedules to reflect actual conditions as carefully as possible.

These computer-based energy simulation programs model the thermal, visual, ventilation and other energy-consuming processes taking place within the building to predict its energy performance. A simulation program takes into account the building geometry and orientation, building materials being used, building façade design and characteristics, climatic parameters, indoor environmental conditions, occupant activities and schedules, HVAC and lighting systems and other parameters to analyze and predict the energy performance of a building

Running a design through an energy model can let engineers, architects, and designers see the effects of design changes on a building’s energy consumption, allowing them to make educated decisions regarding building layout, component selection, and environmental impact.

Manual Load Calculations vs. Computer Energy Analysis

A manual load calculation is used primarily to select equipment size based on maximumload conditions. It uses the space loads, as discussed above, and it is done only for the single instance of peak load conditions. For example, when selecting an air conditioning system for a building, a consultant makes a load calculation to estimate the peak cooling requirement. This is done by calculating the individual load components, and then adding them. For cooling, the load components are solar gain, conduction gain through the walls and roof, heat gained by air leakage, and dehumidification. Heat generated from lighting system, people and equipment in the building, together referred as “internal heat load”, also contributes significantly to buildings loads. Basic peak-load calculations are simple. They can be done manually and they are adequate for many applications. However, manual calculations are not always accurate. One cause of error is that the components of load do not all peak at the same time. Another limitation is inability to deal with thermal storage effects. The degree of detail is limited, e.g. it is not practical to include the precise orientation of the surfaces in a manual calculation.

As a result, a number of computerized load calculation programs are now available. They provide greater accuracy, eliminate the drudgery of arithmetic and provide a checklist to make sure that all load components are included. There is a range of complexity among computerized programs. Some are relatively simple.

For this reason, many designers and contractors do not use load calculations and instead they select equipment capacity using simple rules of thumb, based on the size and mass of the building. To promote energy efficient designs, “rules of thumb” should be discouraged.

Energy performance simulation tools allow designers to:

Building energy modeling can offer a host of benefits for savvy building operations.
“Energy modeling allows designers to push the envelope with less risk”

Even when whole-building energy modeling may be too costly or time consuming, elements of the approach can be tailored to fit many projects.

Building owners and design teams use our energy modeling services to: