KHS Engineering Topics

Over-design (sized) HVAC Systems – Suggestions, Solutions & Recommendations A review by KHS Engineering Topics Many HVAC systems installed in commercial buildings have more capacity than is ever required to keep the occupants/tenants comfortable and in order to provide correct conditions for particular building assets. Such over-design HVAC systems can have negative effects on the environment, on occupant comfort and on the economic outcomes (operational efficiency) of the building. What are the Symptoms of over-design? The concept of “Design Day” is the standard design practice followed for comfort HVAC applications where the design day conditions that may actually present on average 10-15 days per year. So, a HVAC system design/sized based on above conditions will operate full load or run at full cooling capacity on these 10-15 days only. These full load operation days will further reduce due to load diversity, which is often possible in any commercial building. The...

Construction Value Engineering (VE): A review by KHS Engineering Topics What is Value Engineering? VALUE ENGINEERING (VE) is one of the value techniques (Figure 01) practices commonly in building construction industry. It is a methodology used to analyze the function of the goods and services to obtain the required functions of the user at the lowest total cost without compromising the necessary & the expected quality of performance. In other words, VE is a management technique that pursues the best functional equilibrium between COST, RELIABILITY & PERFORMANCES of a product, project, process or service. VE is a multidisciplinary decision-making procedure based on a systematic and structured process concentrating on Value Discovery, Realization & Optimization (Figure 02). It is very significant to understand that VE is not about:                 Cost Cutting          ...