AIETT and ITCC seminar on Ener Con in Hospitality

Typical Steam Utilization Areas in a
Hotel
BOILER
LAUNDRY
KITCHEN
HEALTH CLUB
HOT WATER FOR
ROOMS
AIETT and ITCC seminar on Ener Con in Hospitality Valentine Philips - +66 819020690June 9.2016

Steam Load Calculations
Thumb Rules for Calculations:-
Laundry
1.  A 5 star hotel requires 11 kg/room of linen.
2.  Steam required for Linen is 1.4 kg/kg of linen
3.  Steam required for linen in other areas like restaurant,
bangquets, pubs, common areas will be additonal 5kg /
room /day
4.  Additional steam required for laundry for employees will
be 4 Kg/room / day
Hot Water Generation: -
Hot water required for bath is 25 litres/ person /bath

Steam Load Calculations for 100 room hotel
Laundry:
1.  Steam load for rooms = 11 x 1.4 = 15.40 kg/room/day
2.  Steam loads for common area = 4 kg/room/day
3.  Steam load for laundry for equipment = 4 kg/day
4.  Total steam for load = 23.4 kg/room/day say 24 kg/room.
5.  For 100 rooms, total steam load = 24 x 100 = 2400 kg/room/day
6.  Assuming 8 hours of peak operation. Steam reqd =2400/8 = 300 kg/h
Steam for Hot water: On double occupancy basis:
1.  Hot water for shower = 100 x 2 x 25 = 5000 ltr
2.  Assuming half of them will have shower in eve. So hot water
Requirement will be 2500 ltr.
3.  Hot water for requirement in common areas = 7500 ltrs
(double the water for bath)

Steam Load Calculations for 100 room hotel (Contd..)
Total Hot water requirement for the hotel = 5000 + 2500 + 7500
= 15,000 lt/day.
Hot water peak requirement will be between 5 to 9 in the morning and between 6 to 10
In the evening.
Hence the total hot water requirement per hour = 15000/8 = 1875 lph
Steam requirement = (1875 x 35) / 518 = 126 kg/hr
(Considering inlet of cold water is at 35 and hotwater at outlet is 65 Diff temp = 35)
Kitchen: Steam for kitchen will be 100 kg/hr.
Hence total steam load = 300 + 126+ 100 = 526 kg/hr.
Hence the boiler capacity recommended will be 2 nos x 750 kg/hr
boiler and 2 nos x 1.87 m3/hr Hot water generator (Heat Max).

Steam Load Calculations for different room configurations
Nos. of
Rooms Laundry
Hot
Wate
rr
Steam for Hot
water Kitchen Total
Boiler &
Heat Max.
capacity
Kg/hr LPH Kg/hr Kg/hr Kg/hr
100 300 1875 126.69 100 526.69
2 Nos x 750 Kg/hr & 2 Nos
x 1.87 m3/hr
200 600 3750 253.38 100 953.38
2 Nos x 1100 Kg/hr & 2
Nos x 3.75 m3/hr
300 900 5625 380.07 150 1430.07
2 Nos x 2000 Kg/hr & 2
Nos x 5.62 m3/hr
400 1200 7500 506.76 175 1881.76
2 Nos x 2500 Kg/hr & 2
Nos x 7.5 m3/hr

Typical P & I Diagrams for Hospitality
1 2 3
2 3 4 51

WHAT NEEDS TO BE LOOKED FOR
IN your Industry
SPECIALIZED
CONSULTANCY
ENERGY AUDITS
BOILER
HOT WATER
GENERATOR HEAT MAX
CONDENSATE
RECOVERY SYSTEMS

IN your Industry
SPECIALIZED
CONSULTANCY
ENERGY AUDITS
BOILER
HOT WATER
GENERATOR HEATMAX
CONDENSATE
RECOVERY SYSTEMS

IN your Industry
SPECIALISED
CONSULTANCY
ENERGY AUDITS
BOILER
HOT WATER
GENERATOR HEAT MAX
CONDENSATE
RECOVERY SYSTEMS

IN your Industry
CONSULTANCY
ENERGY AUDITS
BOILER
HOT WATER
GENERATOR HEAT MAX
CONDENSATE
RECOVERY SYSTEMS

How we add value to Any project:
v Calculate the capacity of the boiler depending on the steam loads
and process load variations. Thereby ensuring that optimum boiler
capacity is chosen.
v Designing the system so as to ensure that maximum condensate is
recovered and hence make system economical to run
v Design the piping so as to reduce the pressure drops and ensure
that machines receive steam in optimum quantity and quality.
v Designing of hot water system to ensure that
v Temperature fluctuations are kept to a minimum
v The temperature demands are met in the optimum
manner.
v System on the whole reduces losses and is economical.

ALSO CHECK
n  QUALITY OF STEAM
n  PRODUCING RIGHT QUALITY OF
STEAM
n  PRODUCING GOOD QUALITY HOT
WATER, AT THE RIGHT TEMP AND AT
RIGHT TIME.
n  RECLAIMING WASTE HEAT FROM
CONDENSATE, AND FLASH STEAM
n  Do regular Audits.

Problems due to Wet steam in
Hospitality Industry
n  Increased batch timings
n  Rework of batches
n  Flooding of the heat exchange coils in dryers,
Presses, calendria m/c etc
n  Staining of garments
n  Corrosion of pipes
n  Damage to instruments on the steam line

n SELECTION OF
RIGHT TYPE OF
BOILER

COIL TYPE
ONCE THRU
BOILER

SHELL TYPE BOILER:
THAT’S HOW IT WORKS

THE DIFFERENCE BETWEEN ORDINARY AND
EXTRAORDINARY IS
COIL TYPE SHELL TYPE
vWET STEAM û vDRY STEAM ü
vCOND. RETURN û vCOND. RETURN ü
vLDO / HSD û vFURNACE OIL ü
vMAINTENANCE ü vMAINTENANCE û
vEFFICIENCY û vEFFICIENCY ü
Guaranteed savings in operating cost to the tune of
20-40% of the annual fuel bill

The Proof……..
Plant Industry Replacement Saving L/year Measure
Polybond. Pune Rubber 600 x 2 & 400 x
2 Replaced with
2 TPH IBR
12 1440 ltrs/day
of LDO- 1257
ltrs/day of FO
Dodhia
Synthetics.
Bhiwandi
Textile 600x2 NIBR
replaced with
2TPH IBR
8 30%
improvement in
fuel
consumption
MTZ India.
Dombivali.
Chemical 2x400 replaced
with 1 TPH
IBR
8 40%
improvement in
fuel
consumption
Sarla Polyester.
Vapi
Textile 2x600 replaced
with 1 TPH
IBR
10 300 lit. per day
Dr. Reddy's
Lab. Hyd.
Pharma 3x 600 replaced
with 3 TPH
IBR
28 230 lit/hr
Diesel- 164
lit/hr FO
Miami Pharma.
Pune.
Pharma 400 x 3 nos +
600 x 1no,
replaced with
1120 kg/hr x
1no IBR
11 300 ltrs/day of
FO with
additional
steam using
equipment

Hot Water Systems – HEAT MAX

P&ID of Package Plant Room System

Comparative Features
Parameter PHE Shell & Tube
Weight 1 6
Space 1 7
Hold up 1 10

Salient Features of PPRS
❶  Size
❶  Accuracy of temperature control
❶  Ability to meet demand fluctuations
❶  Low initial cost due to basic design
❶  Flexible design
❶  Pre wired and skid mounted
❶  High Quality design with SS316 plates, pumping trap
system to remove condensate , overheat protection loop
along with standard controls

Condensate Recovery
Systems
Recover heat and Increase
your process Efficiency !!!

Why Return Condensate ?
Ø Condensate is such a valuable resource that even recovery
of a small amount is economically justifiable.
Ø Any condensate not returned will have to be replaced with
make up water, hence increasing the water cost
Ø Draining of condensate is restricted in global std plants
Ø  No Boiler derating hence the output is maximized
Ø The condensate being pure water the cost of treating the
feed water will reduce considerably.
Ø Every 6 Deg rise in feed water temperature will reduce the
fuel bill by 1% AIETT and ITCC seminar on Ener Con in Hospitality Valentine Philips - +66 819020690June 9.2016

Mechanical Condensate recovery
pump system
n  The system uses steam/compressed air as a prime mover
to pump the condensate back to the feed water tank.
n  Minimum moving parts ensure that maintenance problems
are removed.
n  Flash steam which is recovered from the FV can be used
back into the system as LP steam
n  The energy consumed will be less than a centrifugal pump
and issues like cavitation will not be removed

Energy Audits
Study
Research
& Recommend
For better Process efficiencies..

Modus Operandi
n  A detailed study of existing
n  Boilers including all accessories.
n  Steam distribution networks to point of consumption
n  All equipment using steam.
n  Condensate handling system
n  Study the various possibilities of
n  Process improvement
n  Maximum condensate recovery
n  Installation of devices to monitor process performance
n  Recommend
n  Energy savings proposals with little or minimum
investment
n  Investment proposals on different scenarios with pay
back calculations

THANK YOU

AIETT and ITCC seminar on Ener Con in Hospitality

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