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Excitement builds for the Cooling Awards on September 25

Excitement is building for the biggest night out for the cooling sector, with the Cooling Awards now just eight weeks away.

Our illustrious team of judges, drawn from all corners of the industry – an eye-watering 48 of them – have made their decisions following the face-to-face judging round. A total of 19 trophies are up for grabs in the main wards, meaning that a lot of people will be on tenterhooks ahead of the main event at the Hilton on Park Lane on September 25.

The RAC and IOR National Student of the Year Award will also be presented on the night.

As award-winning comedian and podcaster Russell Kane makes a triumphant return to the Cooling Awards, there is also set to be plenty of entertainment on offer for everybody, whether oR not they are directly involved in an award.  And with around 500 of the industry’s finest set to be attending the dinner, the networking is expected to be equally high-quality too.

There’s still time to book tables for the event at

MEP Pojects and high temperatures – do you know the risks?

Heatstroke kills 32 year old former athlete


Recently the sports world was rocked by the death of a young former football star who died from heatstroke. See the reports from the BBC and CBS news.World temperatures are rising and recently parts of Europe and the USA have experienced some of the hottest recorded temperatures. This last summer Australia also experienced record breaking temperatures.

So what can we do about heatstroke? Well this report from the BBC tells us more about the effects of heat on the body.

Those in construction are at particular risk of suffering heat related illnesses since they are often expected to do hard physical tasks for long hours, often out in the open.

Dealing with hot weather on projects

​It’s important that everyone on your construction project is aware of the risks that high temperatures pose. Everyone must be aware of the early symptoms of heat exhaustion so they can take quick corrective action before the situation deteriorates to full heatstroke. There should always be an adequate supply of cool fresh drinking water and workers must be encouraged to drink lots of water. Workers must be allowed to take frequent rest breaks in a cool environment. Where possible try and start work earlier when the day is still cool. Possibly schedule some tasks for the night – particularly pouring concrete. Rotate workers so that one worker isn’t working on a strenuous task all day.Be aware that people on medication, those taking drugs or consuming excess alcohol and caffeine may be more susceptible to suffering the ill effects of high temperature. Those use to working in more moderate and cooler climates are also not as use to working in hot conditions as others may be who have become acclimatised to these conditions, so it’s important to understand that people will be impacted differently by the heat.

High temperatures will impact productivity, but the construction schedule should not endanger people’s lives. Extreme temperatures above the norm may be reason to lodge a variation claim with the client.

Of course heat doesn’t also impact people’s lives it can impact concrete and other products. Concrete, mortar, adhesives and paints will all dry out rapidly, which could lead to problems with finishing the work as well as cracking and other problems.

Take adequate precautions to ensure that heat doesn’t endanger safety or impact quality on your construction project. Working in a cool office may insulate you from the severe heat while others on the project have to deal with the full impacts of the hot temperatures.

How will your project deal with the high temperatures?

AirCo Pakistan | Maintenence | Troubleshooting | Installations

Panasonic goes “big” with R32

UK: Panasonic has introduced the Big PACi series of air conditioners in 20kW and 25kW capacities using R32 refrigerant.

The additions include a water heat exchanger option and a split-able duct indoor unit which can be divided into the heat exchanger and fan parts, allowing for easier installation within narrow spaces such as small retail shops.

As well as being more efficient than its R410A counterparts, the R32 Big PACi series offers a reduced refrigerant charge. The indoor unit is also up to 16kg lighter in weight than conventional Big PACi R410 models.

Designed for easy installation, the new models are said to have a more compact indoor chassis with the depth reduced by 230mm versus the conventional Big PACi R410A range. The compact design is said to still maintain the same level of efficiency overall and has an SEER rating of up to 5.25 and SCOP rating of 3.61.

AirCo Pakistan – Troubleshooting, Maintenance, Installation

AI design can reduce heat pump energy consumption

SWITZERLAND: Artificial intelligence is being used to design next-generation microturbocompressors which could reduce heat pumps’ power requirement by 20-25%.

Turbocompressors are more efficient and ten times smaller than piston devices, but incorporating these mini components into heat pumps’ designs is not easy – complications arise from their tiny diameters (<20mm) and fast rotation speeds (>200,000rpm).

Researchers at the Laboratory for Applied Mechanical Design at Lausanne’s EPFL (École polytechnique fédérale de Lausanne) have developed a method that is said to  make it easier and faster to add turbocompressors to heat pumps. Using a machine-learning process called symbolic regression, the researchers came up with simple equations for quickly calculating the optimal dimensions of a turbocompressor for a given heat pump.

The researchers’ method is said to drastically simplify the first step in designing turbochargers. This step – which involves roughly calculating the ideal size and rotation speed for the desired heat pump – is extremely important because a good initial estimate can considerably shorten the overall design time. Until now, engineers have been using design charts to size their turbocompressors – but these charts become increasingly inaccurate the smaller the equipment. Also, the researchers argue that the charts have not kept up to date with the latest technology.

The EPFL team fed the results of 500,000 simulations into machine-learning algorithms and generated equations that replicate the charts but with several claimed advantages: they are reliable even at small turbocompressor sizes; they are just as detailed as more complicated simulations; and they are 1,500 times faster. The researchers’ method also lets engineers skip some of the steps in conventional design processes. It paves the way to easier implementation and more widespread use of microturbochargers in heat pumps, they argue.

AirCo Pakistan –  Maintenance, Troubleshooting, Installations.

AirCo Pakistan

AirCo Pakistan – Air Conditioning, Servicing, Maintenance, Installations, HVAC

Posted by AirCo Systems Pakistan on Sunday, June 2, 2019


AirCo Systems Paksitan

Maintenance | Servicing | Installations | Troubleshooting

Your Trusted Partner for HVAC Across Paksitan.

Air Conditioning Solutions.

Air Conditioning Pakistan

Airconditioning in Pakistan can be challenging when it comes to finding a professional service provider. At AirCo Services Pakistan we install and maintain your units keeping international standards in consideration. Our technicians have worked in markets across the globe and with world reknown brands like Daikin, LG, Midea, Gree, Mitsubishi, Toshiba, Hisense, Haier.

We have a dedicated team for VRV units, VRF technology is complicated and requires skilled tools and workmanship to install, commission and maintain the air conditioning units. Airco Pakistan can provide complete services and is fully equipped to solve any HVAC related problems.

For complete technical, operational and maintenance solutions please send us an email on:

Our website:

Providing services across Pakistan.

Representatives in Lahore, Karachi and Islamabad.

Reamer Tool

The drill does not produce the correct hole size some time with the good surface finish. A hole with precision size can be produced with a good finish off a pre-drilled hole using a reamer tool. The process of the enlarging hole is called reaming.

The reamer is commonly used to remove the minimum amount of metal (100 to 150 micron for rough reaming and 5 to 20 micron for fine reaming) from the hole. During reaming operations, the job should be properly supported and rigidly held. A stock wrench of appropriate size for holding the reamer is used. The reamer must be kept in its correct position about the job. It must be rotated slowly, and excessive feed must not be given. It should always be-be turned in the cutting direction. Sufficient amount of cutting fluid should also be used. When removing the reamer, it must be turned in the cutting direction. Reamers with blunt or chipped edges must not be used.

Adjustable hand reamer tool

Various kinds of reamers are classified and described as under:

  1. Hand Reamer
  2. Machine reamers
  3. Taper reamer
  4. Spirally fluted reamer
  5. Straight fluted reamer
  6. Parallel reamer
  7. Adjustable reamer
  8. Expanding reamer

Some common types of the reamer used in fitting workshops are discussed as under.

1. Hand Reamer:
It is operated by hand to finish the holes and remove its ovality. Its cutting edges are backed off in the same manner as those of twist drills to give suitable clearance. It is made up of carbon or high-speed steel material. It is used for excellent internal turning in the hole by placing a tap wrench on the square end of the reamer.

2. Machine Reamer:
It is designed for slow speeds for use on drill presses, lathes, vertical milling machines, etc. It is chamfered on the front side of cutting edge. It possesses straight or tapered shanks and comprises of either straight or spiral flutes.

3. Taper reamer:
It is widely used for finishing taper holes smoothly with precision. It is also used to provide a taper to a drilled hole when a taper pin is to be used. It is performed with either straight or spiral flutes. It has spaces ground into the cutting edges or teeth to prevent overloading the entire length of each tooth of the reamer. These spaces are staggered on the many teeth to help in stock removal.

4. Spirally fluted reamer:
It performs greater shearing action than one with straight flute.

Is Your Construction Correspondence Losing You Variation Claims or Projects?


Good communication in construction is essential. Many problems arise because of poor communication, or when our messages are misunderstood.

Unfortunately many in construction don’t realize how important it is to be able to communicate properly. Many don’t see the necessity of being able to write properly. Yet, project managers have to write letters all the time. Some of these letters could literally be worth millions of dollars. Why wouldn’t we want to put the effort into producing a clear and succinct letter that will convince our clients and customers to award a project to our company, or grant the variation claim we’ve submitted.

So let’s have a quick English lesson – a lesson on writing project letters!
Letters should:

  • Have a date.
  • Have a unique reference number.
  • Be addressed to the correct person (the contract normally specifies who that person is, as well as who should be sent copies. If you’re unsure contact the company to find out who the right person is). Oh, by the way, do spell their name correctly – you don’t want to annoy the person before they’ve even started reading your letter!
  • Have a heading, including the project reference name and number (letters to the client should use the reference name and number in the contract document), and a second heading line containing the subject matter.
  • Have an introduction, normally a brief overview of the subject within the letter.
  • Include the body, containing the facts and supporting information (where the supporting information is lengthy or includes numbers, calculations, and diagrams, consideration should be given to inserting these as appendices, and including only the summary of the documents in the body of the letter, referring the reader to the relevant appendix or attachment).
  • Have a conclusion which summarises the facts and indicates the required future course of action.
  • Be logical – state the facts simply and in a logical manner that is easy to follow. Don’t assume the person reading the letter is familiar with the project, or discussions that have occurred on the project.
  • Be confined to one topic, or a few similar topics. Rather write a new letter for a different unrelated topic.
  • Be concise and in simple language. Avoid lengthy sentences.
  • Not be contradictory.
  • Not use emotive language. Don’t get emotional or abusive. Simply state the facts. You don’t want to later regret the things you wrote.
  • Be checked for spelling and typographical errors (if you know your grammar is poor request, someone, to check the letter). As a young project manager, my manager always checked variation claim letters before I submitted them to the client. Frequently they came back with multiple errors highlighted in red ink – yes, it did feel like I was back at school, but they were important lessons.
  • Be arranged in easily readable paragraphs. Don’t just ramble on, with one thought leading into the next one.
  • Avoid using slang.
  • Ensure that when acronyms and abbreviations are used that these are explained, or are clearly understood by the reader and that they are used consistently in the letter.
  • Be numbered correctly and consistently when it’s required.
  • Use consistent text (resist the urge to use text that is in capitals, bold, in color or in italics to highlight a point).
  • Use exclamation and question marks sparingly.
  • Quote the correct clauses from the contract document, the specific reference from the tender documents or the applicable drawing numbers.
  • Be double-checked to ensure that all calculations and figures are correct and that they tie up.

Poorly written letters are often not treated with the seriousness they deserve, and letters which use incorrect facts and figures could cause the client to doubt the authenticity of the figures.

Don’t assume the person reading the letter will have a grasp of all the facts, or know what you are talking about.

Pricing the right construction projects

What construction projects should you be pricing?


Some contractors are like some actors. They sign up for every project that crosses their desk.
This often means that the estimating team works long hours and price estimates are rushed. Little thought is put into ways to make the price more attractive to the client.
When pricing is rushed it could result in errors with the price, which could mean that the price is too high, so the company doesn’t win the work anyway. It could also result in the contractor not winning the project. Often it takes more than just having the lowest price to be awarded a construction project.
In addition, contractors may end up winning the wrong project – one which they don’t have the resources or expertise to complete successfully.
Contractors should focus on pricing the right project, then put all their thought and effort into submitting a winning bid.

What is the right construction project for your company?

Construction projects vary hugely in size, type, location, risks, and clients. Not all projects may be suitable for your company right now. In fact, some construction projects are best avoided if they’re excessively risky or the client is difficult.
Picking the wrong project can be disastrous, while the right project can lead to bigger and better projects later. It’s important to understand the project fully when pricing it and be selective about which projects you price.
It’s also important to consider the pricing or bidding procedures.  If there are multiple contractors pricing the project, your chances of winning the project may be slim.
Sometimes there are competitors who have strong relationships with the client, have more expertise in the type of work, or that are already operating in the area. These competitors will have an advantage over your company, and it may be difficult to win the project.
Try to pick construction projects that are winnable. Don’t waste time pricing projects that will be nearly impossible to win.

Conclusion – win the right construction projects

All the above points would seem obvious, yet, it’s surprising how often they aren’t considered by contractors as they get caught up in the excitement and possibilities of pricing a new project. After all, what could go wrong?
This article was first published on the ClockShark website. To visit this website and continue reading the article click on the link above.
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Are You Tired of Losing Money on Your Construction Projects?

​Is your Construction project making money or losing money?


Several years ago, our monthly cost reports on one construction project showed we were losing money on concrete materials. The matter remained unresolved and the losses mounted. Furthermore, our progress was often held up due to a lack of cement.

With a little research, I found that we had paid $500,000 extra for cement – effectively we had paid $500,000 for cement we hadn’t used! Further investigation revealed that the drivers of the cement trucks were discharging, and selling 30% of each load of cement before they ever reached the project.

Over several months the cement truck drivers had stolen half a million dollars of cement. This resulted in a shortage of cement because the project wasn’t receiving all the cement they were supposed to get, which delayed the project.

The above example illustrates the importance of monthly cost reports. Without them, these problems could have gone undetected. Forever.

But, cost reports are useful in other ways. For example, one company I worked at built several cooling towers, and each time we lost money. No matter how we priced or planned these projects we always lost money. We never seemed to have the right price or construction methods. We eventually decided we couldn’t make money on these projects and avoided pricing them again.

Sometimes we have to accept that we’re not particularly good at some construction projects and we should leave these projects to other contractors.

​Why are construction project cost reports vital?

​Monthly cost reports are useful for a number of reasons:

  1. They can uncover theft and fraud on the project.
  2. They could highlight when materials are being wasted.
  3. Cost reports provide a check that all work and materials have been correctly claimed by the client.
  4. They highlight problems with productivity – when people and equipment aren’t being used efficiently.
  5. Losses could indicate that the project has grown in scope and that the additional work hasn’t been claimed.
  6. Knowing a project is losing money allows company management to put in place mitigating actions to ensure there’s sufficient finance to cover for the impacts on the company’s cash flow, finances, and profitability.
  7. Cost reports provide feedback to the estimating department. It allows estimators to increase or decrease rates when they price the next projects. Decreasing rates may improve the chance of winning another project while increasing rates could prevent future losses.
  8. Cost reports also provide valuable ratios which can be used to check estimates for future projects. We gathered several important ratios for project overheads, equipment costs and labor costs, which provided quick checks on our prices, enabling us to uncover errors in our prices before we submitted them.
  9. Project cost reports provide targets for the project team to aim for. It’s an indication of how well the team is managing the project. Sure, there are sometimes projects that are badly priced, or which hit unexpected snags, so they don’t make money. But then the team needs to justify the losses and the reasons for the losses. But often a project that’s losing money is a project that has other problems.

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