In busy kitchens, there is a lot of smoke, heat and grease that needs to be extracted from the air. This is to protect the health and safety of staff, as well as preventing damage to equipment, walls and buildings.

Commercial kitchen extraction works by drawing contaminated air up through the extractor hood and through a ducting system where it is filtered before being vented outside. There are four main types of commercial kitchen extraction systems – canopy hoods, baffle filters, condensation canopies and filtration units. A make up air system is also often included, which works separately from the extraction system to provide fresh air to the kitchen.

Exploring Kitchen Extraction Systems: How They Keep Your Kitchen Clean

One of the most important functions of kitchen extraction is to prevent fumes, gases and odours from entering other areas of your business, such as customer dining rooms or office spaces. This will not only help to maintain a comfortable working environment for your team but it will also keep the dining experience pleasant for customers.

Extraction systems can also help to reduce noise pollution in a workplace, especially with the latest low-noise models that operate at just over 70 decibels at head height. This is about the same as a vacuum cleaner and far quieter than a steak being grilled in your commercial kitchen!

However, if your kitchen extractor system is not cleaned and maintained correctly, it can lead to several problems. The most obvious is that it can build up with grease which will lead to a fire hazard and reduced ventilation efficiency. This is why it is so important to clean your extraction system regularly, ideally on a daily basis.

As threats to people and buildings increase from criminal acts and terrorism, security measures become more sophisticated. Bollards are a versatile solution to thwart hostile vehicle attacks (HVM) by acting as both visual barriers and physical protection from vehicles. Whether they’re used as standalone applications or covers for steel-and-concrete security posts, these durable and attractive designs allow for access while deterring vehicles from entering sensitive areas. They’re available in multiple sizes and styles that meet different security ratings, as well as illuminated and non-illuminated options.

Do driveway bollards work?

Traditional Bollards security are typically made of cast iron, and provide a timeless aesthetic that blends with most architectural settings. They’re a popular choice for regulating traffic in urban centers and public spaces, preventing vehicular intrusion and controlling access during specific hours. They can also be used in private parking areas, as a barrier for underground garages, and to protect high-profile buildings from attacks.

For a more modern approach, retractable bollards raise to prevent vehicle entry and then slide back into their ground receivers to permit passage. These are ideal for areas where a temporary blockage is needed, such as during events or during construction. They’re also a common replacement for lift gates at access points like parking garages or rail crossings.

For the highest levels of security, crash-rated bollards are designed to withstand multiple waves of vehicle attack. These are often used in governmental facilities and buildings to guard against terrorist attacks. They’re installed far enough from the building to prevent penetration and create a safe distance for people to evacuate in the event of an incident.

In high pressure hydrogen compressor as a renewable energy source, it needs to be compressed to high pressure levels. This article outlines the technical and design features of several classical mechanical compressor technologies (reciprocating, diaphragm, linear) and innovative non-mechanical technologies specifically conceived for hydrogen compression (EHCs, cryogenic compressors, metal hydride and electrochemical). Operating principles and levels of performance of these devices are analysed.

Interstitial metal hydrides (MH) are able to absorb hydrogen at low pressure and desorb it at much higher pressure when heated, making this technology an ideal candidate for an all-in-one one-shot compressor. Moreover, the fact that the same MH may be recharged without contaminating the equipment is highly advantageous in terms of cost and safety requirements.

When used in combination with a thermocouple-based gravimetric hydrogenator, the compressor can be controlled to achieve accurate measurements of hydrogen uptake by the MH alloy. This is done by varying the adsorption temperature by applying liquid nitrogen. This allows the process to be halted at the end of the adsorption cycle by opening a valve at the bottom of the unit, before resuming operation at a lower adsorption temperature.

Efficiency in Motion: Understanding Diaphragm Compressors

When using a mechanical compressor, it is important to design the compressor vessel carefully with a view to avoiding leaking metal and hydride particles. A filter preventing the escaping MH is essential for two reasons: (1) sharp, dehydrided particles can damage valve seats and prevent tight shut-off of the delivery valve; and (2) escaped MH is an unaccounted-for sink/source of hydrogen within the attached system, such as a Sieverts hydrogenator, that could have a deleterious impact on the measured data.