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Purchasing Energy-Efficient Large Commercial Boilers ...

Oxygen trim systems should be used on larger boilers. Oxygen trim systems monitor the oxygen in the flue gas and adjust the air-fuel ratio for optimum combustion efficiency. Optimum start control: An optimum start control fires up a boiler so that it fires just in time to heat up a building before it is occupied in the morning.

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1910.104 - Oxygen. | Occupational Safety and Health ...

"Definition." As used in this section: A bulk oxygen system is an assembly of equipment such as oxygen storage containers pressure regulators safety devices vaporizers manifolds and interconnecting piping which has storage capacity of more than 13000 cubic feet of oxygen Normal Temperature and Pressure (NTP) connected in service or ready for service or more than 25000 cubic feet of ...

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What is the Proper Tons Per Square Foot for Commercial ...

Mar 05 2019 · Thus a 2000 square foot area with two windows four regular occupants and one kitchen would have a BTU of 52720. This would require 4.39 tons of AC or 455 square feet per ton. This is close to the 400 square feet per ton sizing of the HVAC industry in Chicago and Orlando but you will notice the variance due to us adding a kitchen and windows.

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Essentials of Heating and Cooling of Buildings Help | EZ ...

Being conservative and taking h o = 17 W/m2 · °C = 3.0 Btu/h · ft2 · °F the summer design values of the ratio a s /h o for light- and dark-colored surfaces are determined to be (Fig. 23) where we have assumed conservative values of 0.45 and 0.90 for the solar absorptivities of light-

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Purchasing Energy-Efficient Large Commercial Boilers ...

Oxygen trim systems should be used on larger boilers. Oxygen trim systems monitor the oxygen in the flue gas and adjust the air-fuel ratio for optimum combustion efficiency. Optimum start control: An optimum start control fires up a boiler so that it fires just in time to heat up a building before it is occupied in the morning.

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View Document - New York Codes Rules and Regulations

Jul 15 2020 · (1) Standards. The performance prescribed in the energy code in the Official Compilation of Codes Rules and Regulations of the State of New York (NYCRR) Title 9 Part 7813 or 7814 as applicable to the building type must be met for all heating cooling and service water heating equipment that belongs to the base building or tenant space.

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High-Performance HVAC | WBDG - Whole Building Design Guide

Nov 07 2016 · For example a typical office building minimally complying with the ASHRAE Standard 90.1 might use 75000 Btu/sq.ft./yr. The goal for many federal buildings is 50000 Btu/sq.ft./yr. A highly energy-efficient building using conventional comfort could have an energy use of

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