This project provides the facility to all users to send and receive the courier. They can get the information of the status of the courier. System development is also considered as a process…Full description
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This project provides the facility to all users to send and receive the courier. They can get the information of the status of the courier. System development is also considered as a process…Full description
Full description
Descripción: sistema electrico del vw amarok sistema de iluminacion de carretera sistema de carga sistema de arranque
Easy greyhound betting system
Explaining how a cooling system operates
Medical-Surgical Nursing Endocrine System Reviewer Endocrine system 1. 2. 3. 4. 5. hormones released into the bloodstream travel throughout the body target is usually far from site of synt…Full description
F.O systimDeskripsi lengkap
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A system for students registration in the college.
HYDRONIC SYSTEM J.ILANGUMARAN
P.S. 6" Ø
6" Ø
P.S.
5" Ø
10"Ø
5" Ø
10"Ø 5" Ø
10"Ø
5" Ø
5" Ø
5" Ø CONDENSER
10"Ø 5" Ø
5" Ø
5" Ø
5" Ø CONDENSER 10"Ø
10"Ø 10"Ø 5" Ø
5" Ø
5" Ø
5" Ø CONDENSER
CONDENSER WATER PUMPS ( ONE STAND BY )
HYDRONIC SYSTEM
HYDRONIC SYSTEM - BASIC COMPONENTS EXPANSION CHAMBER
PUMPS
* CHILLERS * HOT WATER GENERATORS
SOURCE HEAT
LOAD HEAT
TERMINAL UNITS * . . . * F.C.U.
DISTRIBUTION SYSTEM
* SOURCE
* LOAD
* PUMP
* DISTRIBUTION SYSTEM ( PIPING NETWORK ) * EXPANSION CHAMBER
WATER IS USED TO CARRY HEAT FROM POINT OF GENERATION SUCH AS COOLING / HEATING COIL TO A POINT WHERE IT CAN BE REJECTED SUCH AS REFERIGERANT MACHINE & HOT WATER GENERATOR COOLING & DEHUMIDIFICATION
COMPRESSOR
COIL-CHW
CHILLING MACHINE AIR FLOW TO SPACE
55° F CHILLED WATER RETURN CONDENSOR
WATER PIPE LINES
45°F CHILLED WATER SUPPLY
HEAT REJECTED TO
HEAT EXCHANGE BETWEEN CHILLED WATER & AIR
REFRIGERANT ie. AT COOLER
TERMINAL UNITS * AHU'S * FCU'S
HEATING - HOT WATER & COIL HOT WATER SUPPLY HEATING COIL
AIR FLOW TO SPACE HOT WATER SUPPLY
° HOT WATER GENERATOR
° 100° F HOT WATER RETURN PIPE
HEAT REJECTED TO ELECTRIC HEATERS
HEAT EXCHANGE BETWEEN HOT WATER & AIR TERMINAL UNITS * AHU'S * FCU'S
AIR OUT
COOLING TOWER COMPRESSOR
CONDENSOR CONDENSOR WATER RETURN
AIR IN
CHILLING MACHINE
WATER PIPE LINES
WATER SUPPLY HEAT OF REFRIGERANT CONDENSATION REJECTED TO COOLING TOWER ie. ATMOSPHERE
HEAT TRANSFER BETWEEN REFRIGERANT AND WATER
WATER IS USED TO CONDENSE THE REFERIGERANT TO LIQUID. IT THUS TRANSPORTS THE HEAT OF CONDENSATION TO COOLING TOWER FOR REJECTION TO ATMOSPHERE
DISTRIBUTION NETWORK
MECHANICAL PLANT ROOM HIGH SIDE
SOURCE -
WATER IS USED AS
GENERATION OF COOLING/HEATING
A CARRIER OF HEAT, IT IS THE COOLANT
LOW SIDE
F.C.U.
F.C.U.
F.C.U.
F.C.U.
F.C.U.
F.C.U.
F.C.U.
F.C.U.
CHILLED WATER SUPPLY CHILLED WATER RETURN
BLOCK A F.C.U.
F.C.U.
F.C.U.
F.C.U.
F.C.U.
F.C.U.
F.C.U.
F.C.U.
OR COOLING MEDIUM. IT TRANSPORTS THE SPACE HEAT TO
DISTRIBUTION NETWORK
BLOCK B AHU
L
CHILLING MACHINE. WATER IS A SECONDARY
L L AHU BLOCK D BLOCK C
AHU
REFERIGERANT
CHILLER FLOW RATE HEAT CARRYING CAPACITY OF PIPING Q
=
MASS FLOW RATE x SP. HEAT x TEMP. RANGE
Q BTU/HR
∆
=
GALLONS/MINUTE x 8.33 T0 F
POUND/GALLON x 60 x 1 x
∆
=
GALLON/MINUTE x 500 x
T0 F
T0 F
=
BTU/HR PER GPM, FLOW RATE
8
=
4000
3.0 GPM / TR.
10
=
5000
2.4 GPM / TR.
15
=
7500
20
=
10,000
∆
CLOSED RECIRCULATING TYPE ATMOSPHERIC PRESSURE EXPANSION TANK
STATIC HS = STATIC HD THERE IS NO UNBALANCED STATIC HEAD. EVEN WHEN PUMP IS NOT IN OPERATION, THE ENTIRE PIPING IS FILLED WITH WATER
CHILLED WATER SUPPLY
THE PRESSURE AT THE HIGHEST POINT = TERMINAL UNITS
CHILLED WATER
COOLER
RETURN
SYSTEM PRESSURE + STATIC HEIGHT & LIQUID (EXPANSION TANK WATER
44° F
PUMP
54° F
LEVEL )
DIRECT RETURN D
E AHU / FCU
10 FT
10 FT
C
F AHU / FCU
10 FT
10 FT
B
G AHU / FCU
10 FT
PUMP A
COOLER
H
40 FT
PARALLEL PATHS -
A-B-G-H ( 100 FT. )
SHORTEST PATH
-
A-B-C-F-G-H (120 FT.)
-
A-B-C-D-E-F-G-H ( 140 FT. ) LONGEST PATH
SEAMLESS IS EXPENSIVE & HENCE NOT USED GENERALLY FOR HVAC SYSTEM
FOR CHILLED & CONDENSER WATER PIPING ERW CLASS -C PIPES ARE USED
CLASS A IS NEVER USED
FOR DRAINS ERW CLASS ‘B’ GI PIPE IS USED
CONTROL VALVES
CONTROL VALVES ARE USED ACROSS THE COOLING / HEATING COILS FOR VARYING WATER FLOW IN RESPONSE TO CHANGING LOAD. -
3 WAY MOTORISED - DIVERTING 2 WAY MOTORISED 3 WAY VALVES ARE USED FOR CONSTANT PUMPING SYSTEM, WHILE 2 WAY VALVES ARE USED FOR VARIABLE PUMPING SYSTEM.
3 WAY MOTORISED MIXING VALVE CHW / HOT WATER IN
COIL
B CHW / HOT
AB
A
MOSTLY USED IN RETURN LINE OF COOLING / HEATING COILS. THERE ARE TWO INLETS AND ONE OUTLET. THE PORT DESIGN IS SUCH THAT IT CANNOT BE USED IN PLACE OF DIVERTING VALVE. FLOW VARIES THROUGH THE COIL. THE TOTAL FLOW REMAINS REMAINS SAME.
3 WAY MOTORISED DIVERTING VALVE CHW / HOT WATER IN
AB
A B
COIL
CHW / HOT WATER OUT
THERE IS ONE INLET AND TWO OUTLETS. THE PORT DESIGN IS SUCH THAT IT CAN BE USED IN PLACE OF MIXING VALVE. DIVERTING VALVES ARE EXPENSIVE AND ARE NOT COMMONLY USED.
EXPAN. TANK AHU 4000 CFM
4"Ø
AHU 4000 CFM
8"Ø
8"Ø
8"Ø 4"Ø
CHILLER 4"Ø
8"Ø
8"Ø "
4"Ø
4"Ø
4"Ø
4"Ø
CHILLER
8"Ø
AHU 4000 CFM
8"Ø
4"Ø
4"Ø
4"Ø
4"Ø
4"Ø
4"Ø CHILLER FLOW RATE / MACHINE = 1226 LPM WATER TEMPERATURE IN = 53°F ( 11.6 °C ) WATER TEMPERATURE OUT = 45°F ( 7.2°C )