Dave Donohue’s Post

SOHS is conducting a training program on Static Electricity. Main URL: https://lnkd.in/g56BhzwB Short URL: https://shorturl.at/z3Jr4

FREE Whitepaper: Understanding Gas Trains and Their Importance in Ensuring Safe Domestic Hot Water System Operation. Get it here: https://ow.ly/xlUb50U4Hx8 #PVI #HotWater #DHW #MEP

Dear Learners, Welcome to the 19th Technical Thursday (TT-19) session. In today’s session, we will learn how to evaluate ‘Cooling Tower Performance’. Let us first understand the important parameters that determine cooling tower performance. 🎯 Range: Range is the difference between the hot water temperature to the cooling tower (Cooling water return temperature, TR) and the cold-water temperature from the cooling tower ( Cooling water supply temperature TS). 🎯 Approach: Approach is the difference between the cold-water temperature from the cooling tower ( Cooling water supply temperature TS) and ambient wet bulb temperature(TW).    Cooling Tower Effectiveness (€)  is calculated using the formula       € = Range/(Ideal Range) Range = TR – TS and Idea Range= TR – TW    Effectiveness €= (TR – TS) /(TR - TW)  **By Adding and subtracting Ts in the denominator**                                                                                                          € = (TR – TS) /(TR – TS) + (TS- TW) € =   Range/(Range + Approach) Thank you so much Pravin Panaskar sir for your feedback. #TechnicalThursday #KnowledgeSharing #LearnAndGrowTogether #OilandGas #ChemicalEngineering #KnowledgeSharing

For industrial and commercial purpose, fire is not the only concern. Sometimes, we want to detect both gas and fire. Some gases are toxic , some are flammable while others are both toxic and flammable. There are 3 hazards associated with gas, namely fire/ explosion, toxicity and asphyxiation. Unfortunately, the concept is not as simple as smoke or heat detection. In order to design a good system for gas and fire detection in an industrial or commercial facility, it is important to know exact type of gas we are trying to detect and what is the threshold for detection. Some fuels do not produce visible flames and carbon soots or carbon monoxide. In actual fact, you need to have layered detections incorporating gas detection and fire detection. Click to learn fire as complete module. This course is offered as part of free course to the complete module. https://lnkd.in/gBMy2SUU

Did you know that potential gas hazards in schools include natural gas, carbon monoxide and carbon dioxide? These gases can come from common sources like oil or gas furnaces, water heaters, and gas stoves found in furnace rooms, science labs, and kitchens. 🏫 Natural gas leaks not only waste expensive fuel but can also lead to dangerous explosions. When natural gas doesn't combust properly, it produces carbon monoxide, a toxic gas that can spread quickly through the air and vents. By taking precautions and performing regular maintenance on your gas detectors, we can work together to create a safer, cost-effective solution to keeping children and staff safe in schools. 🔗 Tap to learn more or get in touch with our experts today: https://buff.ly/3EuCd4Z #Schools | #GasDetection | #CETCI

The superior efficiency and reliability of PVI water heaters like Turbopower® 96 and Power VTX translates into significant energy and operational savings for colleges and universities so more money is spent where it’s needed most - in the classroom. Learn more: https://ow.ly/EKPN50UcX7E #PVI

This ppt is being posted prior to a series of Lunch and Learn sessions by AIS Ltd starting next week where high pressure H2 issues are very much a live issue for passive fire protection in the arena of phenolic MS400 jet fire passive fireproofing and blast protection where the fire risk involves jet fire heat flux ~1600-1700 deg C., and pressures up to 700 bar. The ppt itself involves explosion overpressure mitigation tests by Advantica using deluge overhead systems of a very defined performance. Since the ppt was published, there have been massive advances in both ultrasonic gas detection and open path gas detection, where 1oo2 ultrasonic alarm can be set to zero seconds (1st up alarm + start fire pump), 2oo2 overhead open path gas detection (10%LEL) in confirmed alarm + ESD closedown + activate overhead deluge system. Milliseconds count. As can be seen from the data (using methane), overpressure was reduced from 2 bar down to 0.5 bar (a 75% reduction in overpressure). A useful read prior to the LnL's as most people will not have seen this data or be aware of it. The precedence of using ultrasonic detection set to zero seconds comes from the Kashagan project (650 bar very high H2S - and it has operated). Can also be used for Syngas Compressor buildings in Methanol production.

Guys. Here , as promised , is water dew point Temperature , and Pressure giving the WATER CONTENT OF THE GAS IN : lbs(water)/MMSCF(gas) Notice at 80 deg F , and 1000 psia , the value of the water content of the natural gas is : around 40 lbs/MMSCF. Find your own field conditions. I will go to second step , which confirms water dehydration , with water removal for an LNG PLANT. 1) base water to be removed. The water content graph ( PetroSkills / JMC WILL respond 2) with the shown deyh plant , there are three toweres : 1) Adsorption , 2) Dehydration, and 3) Regeneration/Cooling 3) we will look at total water to be removed with gas rate : MMSCF/d , water loading , W , lbs/ MMSCF as shown on graph. 4) after choosing tower residence time ,we will establish a solid bed reactivity in : lbs water removed per lb water 5) we will design diameter, and length ft^2 ; ft. And amount of 4A DEHY. to be loaded into tower 6) next regeneration with water “ free” gas during time cycle less cooling time for readsorption. Be back Sorry about MY ERROR on last post. Be well. God bless Image : PetroSkills / John M Campbell

Research reveals UK fire services attended 46% more fires linked to Lithium-ion batteries in 2023 than the previous year. 🔋🔥 Lithium-ion battery fires spread very quickly and are often difficult to extinguish. There is a growing importance to prevent fires caused by them. What can be done to bring these figures down? Find out more and learn about Gent Li-ion Tamer gas detection system in our new blog below 👇 https://lnkd.in/ewCra-u5 Li-ion Tamer systems can improve the safety of Li-ion batteries by detecting problems early.

Going to put my theory of thermal event fire protection to good use.