Types of Mechanical Systems in A Building?

When referring to mechanical services within a building, this commonly includes plumbing, electrical systems, HVAC, ventilation, elevators, and possibly even escalators. If moving components are involved, such as water, electricity, or gas, it is most likely a mechanical system. MEP (mechanical, electrical and plumbing) are the three technical disciplines encompassing the systems that are incorporated into buildings in order for them to be suitable for human occupancy and use.

1. CONSTANT VOLUME FORCED AIR SYSTEM

While being the simplest of systems, it is very efficient, and probably the most used of all types of units. It is appropriate for residential use, offices, schools, and churches. It is suitable in winter and summer conditions, utilizing air as a vehicle for delivering heat to space during winter or using air to take heat from space during the summer.

Fuel for heat includes natural gas, LP gas, oil, and electricity. Fuel for cooling is electrical, utilizing a refrigerant to collect and remove heat from da space. The principal disadvantage of the constant volume forced-air system is that it is good for one thermal zone only, because it is controlled by one thermostat. The unit is either on or it is off. There is no in between. The fan that delivers air in the on position operates at full capacity, varying heat source as on or off; or varying cooling source as on or off.

Get Your Ebook of Top 10 Tips To Submit Better Bids

Contractors can win more bids with the right strategies of bidding. We have shared secrets for residential and commercial bids.

2. VARIABLE AIR VOLUME SYSTEM

Suitable for medium to large buildings where thermal zones are created within the spaces, primarily due to the movement of the sun. A unit is provided that, at full capacity, can deliver sufficient heated or cooled air to the entire unit system, should the space require 100 percent capacity. Very similar to the type of heating and cooling control in your car, in that one may control the temperature by simply regulating the amount of air delivered. The unit is made with several individual outlets that deliver air, with thermostat control for each outlet. When air from one of the individual outlets is ducted to a space, a thermal sensor regulates an air damper to vary the volume of air delivered, in concert with the temperature setting of the thermostat. In this system, each outlet from the unit satisfies the demand required by a thermal zone within the building.

3. HIGH VELOCITY – DUAL DUCT SYSTEM

The system generates cold air at a temperature of 40 – 45 degrees, and warm air at a temperature of 130 – 150 degrees. The generating system is generally remote from the areas to be conditioned. In a high rise building, the mechanical system may be on a floor and deliver air to floors above and below the generating units.Since the system deals with enormous volumes of air, it must be delivered at a very high velocity to accommodate the areas. Air is pushed through ducts at a velocity of from 3,000 to 5,000 feet per minute, to keep ducts as small as practical for the application. Air movement at that speed creates a great deal of noise, so ducts are located in interstitial spaces away from habitable areas.The required amount of air for a given area is collected in a mixing box, which controls the volume of entering air with motorized dampers to allow the proper amount of cool air and warm air to be mixed to the temperature called for by the area thermostat. A thermal sensitive device in the mixing box controls the blades of the motorized dampers.

4. HOT AND CHILLED WATER SYSTEM

A system for medium to very large buildings. A small country hospital, a motel, or nursing home could utilize hot and chilled water. Any facility where a large number of individual controls are needed, not because of thermal zones, but the requirement for private areas to be able to control their own comfort.For cooling, water is chilled to a temperature of 35 to 40 degrees, then pumped through a system of piping to areas where other equipment is used to absorb heat from spaces into the chilled water. The water is then re- circulated back to the chilling unit, and the process continues.For heating, water is heated to a temperature of 180 degrees, then pumped through a system of piping to areas where other equipment is used to add heat to a space. The water is then re-circulated back to the boiler, and the process continues.

Process To Get Mechanical System Estimate Report

Here I am going to share some steps to get your Mechanical System estimate report.

You need to send your plan to us.

You can send us your plan on info@estimatorflorida.com
You receive a quote for your project.

Before starting your project, we send you a quote for your service. That quote will have detailed information about your project. Here you will get information about the size, difficulty, complexity and bid date when determining pricing.
Get Estimate Report

We do Mechanical System estimating and prepare a detailed report for your project. At last you finalize the report and finish the project.