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 819020690 June 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/hr

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




ENERGY AUDITS

BOILER

HOT WATER GENERATOR HEATMAX





ENERGY AUDITS

BOILER





SPECIALISED CONSULTANCY

ENERGY AUDITS

BOILER





CONSULTANCY

ENERGY AUDITS

BOILER




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. AIETT and ITCC seminar on Ener Con in Hospitality Valentine Philips - +66 819020690 June 9.2016

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 AIETT and ITCC seminar on Ener Con in Hospitality Valentine Philips - +66 819020690 June 9.2016

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 AIETT and ITCC seminar on Ener Con in Hospitality Valentine Philips - +66 819020690 June 9.2016

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 819020690 June 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 AIETT and ITCC seminar on Ener Con in Hospitality Valentine Philips - +66 819020690 June 9.2016

THANK YOU


aiett and itcc seminar on ener con in hospitality

Environment