HVAC Design: How People are doing it internationally

HVAC Design: How People are doing it internationally

Rome was not a result of one day’s efforts, nor of its resilient HVAC infrastructure.  It needs the determination, concentration, and vision to bring the combined efforts of various expertise having common aim to achieve high efficiency, reliability, ease of maintenance and lower cost of the life cycle.

With the help of Resilient infrastructure, an organization can perform its core operations in an energy efficient manner.

The natural gas generators are installed at resiliency for hospital facilities to achieve full diversity and redundancy in its generation fleet. Companies that use photovoltaic generation requires the installation of battery storage to manage the changes in the peak time of usage of creating structure by utilities.

Los Angeles

Los Angeles Community College District (LACCD), in California attempts to estimate the future needs of heating and cooling process for its own campuses with the help of HVAC projects.

This technology can be used by every organization to update their facilities in terms of energy efficiency.

The use of this dynamic technology results into the cost-effective energy consumption at Los Angeles Community College District (LACCD) and its nine Southern California based campuses.

Early projects for LACCD  were majorly concerned with the retro-commissioning and mechanical system retrofits in the buildings. But with the time some necessary modifications have been done in terms of delivering mechanical, electrical, and plumbing (MEP) services to the buildings and recently 2 large scale plant projects are introduced for chilled water thermal storage systems (TES) in the design.

The main objective of this large project is to provide a reliable and resilient cooling and heating system for the campus with the required level of flexibility to manage it with respect to the changing landscape.

California has implemented very dynamic renewable energy goals.

LA City College is situated at north downtown of Los Angeles. Its campus is growing with the demand from last 10 years and this continuous growing development also demands the modifications in the capacity of the central plant to cope up with the current needs because the existing plant is not able to deliver the cooling services that are required. A new cooling and heating plant is designed for the campus with the help of LACCD  and its design team. This design includes 2,500 tons in new high-efficiency chillers, cooling towers, and a 10,000 ton-hour chilled water storage tank.

This project of LA city was made in the congested college premises that doesn’t affect the normal operations.

The CA chilled water plant of Los Angeles Valley College campus in Valley Glen was modified to generate 8,000 ton-hour chilled water storage tank and a 1,000-ton chiller.

Its existing plant had an ice storage system that was not very much efficient and was also not able to deliver the services as per the campus demand within nominal costs.

After its upgradation, now the new chilled water storage system is overcoming all the challenges faced previously. It provides efficient operation in a cost-effective manner. That provides the flexibility to optimize the plant and able full fill the extended demands of the campus.

The LA Valley College has also gone through the same experience with its central cooling plant. Its existing plant was designed in such a way that it can be used for  350-ton solar thermal absorption chiller in series with a 900-ton dual-compressor centrifugal and a 350-ton plate-and-frame heat exchanger providing a combined capacity of 1,600 tons. A heat exchanger of 400 -ton glycol was fixed with the system. But the plant was not able to deliver the services with respect to the growing demand of the campus.

Finally, the solution to this problem was to upgrade the central plant that can give,8 000 ton-hour chilled water storage tank and a new 1,000-ton chiller that offers the all required level services to the campus in a reliable and cost-effective manner. With the help of this solution, the campus is now able to generate a large range of chilled water.  

All these modifications and upgradations in the cooling system reduce energy demand in Los Angeles.

In every LACCD campus, the HVAC technology offers innovation and enhancement that leads to an increased level of comfort in managing the central plant of cooling and heating system at the college campus. The plant operators need not worry about the continuously growing campus cooling demands. This technology also provides a great level of flexibility and reliability to the operators that help them to take the decisions such as when to operate and how to operate the plant in a cost-effective manner.

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