HVAC Retrofits – HVAC Improvements For Existing Buildings

1 approach to identify tenant demands would be to note what architects and designers are currently trying to make for customers in buildings. The aim of new construction is to supply the perfect office space. Tenants are often looking for space that may address these problems as versatility, modular space planning, environmental concerns, and individual temperature relaxation. A specific hot place for many tenants would be to acquire the maximum degree of productivity. This implies the building will need lots of HVAC zones, flexible office hours and systems. These variables point to an often and flexible HVAC system that can meet with tenants’ requirements.

Architectural trends can also create new loads and prerequisites for an HVAC system in a present facility. More natural light can increase heat loads; atrium designs can block air distribution; added zones can raise the volume of ventilated air required, the quantity of heat to be rejected as well as the quantity of outdoor air needed. If a building does not have a flexible HVAC plant, then modifications or upgrades to the HVAC system will be essential to compete with building design and technology.

One factor that must be considered in any analysis of a possible retrofit is that an HVAC update usually means the building needs to be brought into compliance with current codes. Some codes are based on prescriptive regulations; however, the trend to make a more secure and healthier indoor environment may also bring new performance requirements. For instance, the proportion of outside air has gradually been increased, then buildings have the capacity to 33, and outdoor air may be called for by present requirements. Bringing the setup to code may require a significant investment in upgrades beyond those. Applewood Air

Making Retrofit Decisions

HVAC systems are significant energy users, and new HVAC technology is a lot more efficient than 15 to 20-year-old systems in place in buildings. Sometimes, the energy savings are so substantial that they warrant the investment. But in many office buildings, it can be tricky to justify an HVAC upgrade. Maybe some upgrades are performed through the years, reducing the energy savings now available. Or the proprietor has a brief a payback-period need for energy upgrades.

When energy savings alone do not clearly justify an update, how can the facility executive accountable for a commercial office building determine whether and how to update the HVAC system? It’s ideal, to begin with, the building profile. A comparatively small or mid-sized building (less than 200,000 square feet) could pose marketing opportunities not readily available to larger facilities. For instance, instead of converting a constant-volume method to variable-air-volume (VAV), then it may be possible to create each floor a separate zone. The marketing plan could then be altered to concentrate on bigger, whole-floor users. Brampton New Furnace & AC Installation & Repair

At a moderate or large-sized construction, upgrade options will rely on the kind of system in place. In the event, the base building process is a constant volume system, with the fans delivering air temperatures that are varied there is not much choice. To serve the needs of the tenants of today, the facility executive may need to grow the skills. This is accomplished depends on the building’s design and business program.

By way of instance, new speculative office buildings sometimes install heat pumps, which can deliver heating or cooling to little or massive zones, are readily programmable and operate at about 50 cents a ton each hour. However, is the first cost for installing heating pumps a value for retrofits? Probably not if the building was configured as a multi-zone or constant-volume system. Using heat pumps would require conducting condenser piping through the building and altering the fresh air distribution the true conversion could not run parallel when this retrofit was tried in the summer because the tower could be reused. Learn more about Applewood Air

In this scenario, choices for conversion should be restricted to a VAV conversion or into individual zone diffusing that does not reduce energy costs but does create relaxation zones similar to VAV systems. The air volume fluctuates with the comfort setting, although VAV systems provide space with a continuous temperature. It has some kind of VAV system set up if the building was built after 1975. The systems did provide zone formation nevertheless, after-hour and adaptive operation were not part of the system.

The hardest VAV retrofit decisions are those in which the payback linked to energy reduction has been captured by vortex dampers or from the later addition of variable frequency drives. If the facility will not obtain an influx of energy savings, HVAC retrofits will have to be justified based on improved flexibility functioning, and supplemental. The facility executive must devote the time required to comprehend the value to the asset from a marketing standpoint.

It is essential that all values are considered when making a determination. More is involved than the price of energy. There’ll be other gains which are not as obvious. A new cooling tower or chiller that is brand new not only works with kilowatts per ton but in addition, it has heat transfer surfaces, better skills that are part-load and reduces maintenance requirements. After it’s segregated from general operating expenses the quantity of work and maintenance necessary to service a temperamental HVAC system can be quite a surprise.

The center executive must also examine the useful life of the present system. Will there be parts available? Is there a service firm that will be inclined to support the machine? When a decision is made to market the building will the machine be flagged as unserviceable? When a major block of space comes up in a couple of years, can the system be used? These are all questions to ask when building systems’ reliability becomes an element in the market and every time a system is facing obsolescence.