Introduction Flashcards
process of cooling to provide human comfort
Air conditioning
used for food preservation
refrigeration
perform
mechanical, electrical, and civil
engineering work in design, construction,
operation and maintenance of water
systems, electrical power lines, and power
plants
Engineering Utilities
s the decision
and practice of using less energy.
Energy Conservation
Production of natural gas and the delivery to the customers
Gas Utilities
The functions of Gas Utilities
Generation, Transmission, and Distribution
Production of drinkable water and its delivery to its customers
Water Utilities
Functions of Water Utilities
Treatment, Transmission, and Distribution
Addresses health related issues such as the presence of biological and toxic contaminants
Water Treatment
Transport dirty water away from customers and treats the dirty water.
Wastewater Utilities
These are the natural monopolies, they require government oversight so that they do not exercise monopoly power to the detriment of customers and society
Utilities
They establish regulations and monitor for compliance
Regulatory Boards
Goals of Regulators
To have utility services provided with adequate service levels with lowest possible rates.
Examples of Utilities Equipment
Cooling Tower, Airconditioning System, Air Compressor System, Water-Cooled Chiller
An integral part of the larger and more complex building procurement process through which an owner defines facility needs, considers architectural possibilities, contracts for design and construction services and uses the resulting facility.
Design Process
During _____ they determine specific electrical and mechanical systems and equipment, and very often will determine the owner and occupant satisfaction
Design Process
The building project begins with this, it establish the need for feasibility of, and proposed scope for a facility.
Predesign Activities
Simply a statement that outlines the expected high-level outcome of the design process.
Design Intent
The benchmarks against which success or failure in meeting design intent is measured.
Design Criteria
The sudden change for no obvious reason.
Whimsical Change
Forms the coldest part of the cabinet with a temperature of about -15°C
Freezer
The refrigerant evaporates at what temperature?
-25°C
This is located below the freezer
Chiller Tray
What is the standard condensing temperature?
55°C
The throttling devices that transport refrigerant from high pressure condition to low pressure condition
Expansion Valve or Capillaries
Is the rate of cooling required to freeze one ton of water at 32°F into ice at 32°F in one day or 24 hrs.
Is the rate of cooling required to freeze one ton of water at 32°F into ice at 32°F in one day or 24 hrs.
Is a cycle that receives heat from a colder and delivers heat to a hotter body, not in violation of the second law, but by virtue of a work input.
Reverse Cycle
Are cycles used to pump heat from low to high temperature regions: or cycles with the objective of extracting heat from low temperature reservoir.
Refrigeration Cycles
Devices that operate in a cycle and transfor heat from a low-tomperature region to a high-temperature region with work input to the system.
Heat Pump and Refrigeration
A cycle with the objective of supplying heat to the high temperature reservoir
Heat Pump
A body with the large heat capacity such that when heat is removed or added to the reservoir the temperature of the reservoir does not change.
Thermal Reservoir
Being use for food preservation ; removing heat from substances in chemical, petroleum, and petrochemical plants: and numerous special applications such as those in the manufacturing and construction industries.
Refrigeration (Industrial Refrigeration
It was one of the earliest refrigerants and was widely used whenever a completely nontoxic medium was needed. It is used for aircraft refrigeration systems
Air Refrigerant
It is one of the oldest and most widely used of all the refrigerants. It is highly toxic and flammable
Ammonia
It is a colorless and odorless gas, and is heavier than air.
.Carbon Dioxide
It is colorless liquid with a faint, sweet, nonirritating odor
Methyl Chloride
