Ac portable for car: China Portable Car Air Conditioner, Portable Car Air Conditioner Wholesale, Manufacturers, Price

China Portable Car Air Conditioner, Portable Car Air Conditioner Wholesale, Manufacturers, Price

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Are Portable Air Conditioners a Lot of Hot Air?

Think of portable air conditioners as the cooling choice of last resort. They’re better than a fan but far less effective than a window AC.

That’s what Consumer Reports’ experts consistently see in our tests of portable air conditioners. Despite the manufacturer claims, these units barely get a room below sweltering, let alone to the 78° F that’s considered the upper threshold of indoor comfort.

Portable air conditioners are intended for homes in which window configurations or building regulations prevent the installation of window units.

“A portable air conditioner is an alternative—but not an ideal one,” says Chris Regan, who oversees Consumer Reports’ air conditioner tests. Portable units are typically bigger, noisier, and more expensive than window units, and they use more energy. In fact, retailers report that many portable air conditioners are returned each season by dissatisfied customers.

Unlike a window air conditioner, all the mechanical parts of a portable air conditioner are sitting inside the room you’re trying to cool. This contributes to the noise they can make.

It’s also a reason for less-than-capable cooling. While a window AC uses outside air to cool the coils on the outdoor part of the unit, a portable air conditioner uses conditioned air from the room it’s sitting in to cool the mechanicals. That creates negative pressure that causes warm, unconditioned air from nearby rooms or the outdoors to flow into the room you’re trying to keep cool.

And it’s debatable how portable they are. Once the hose is connected to the kit in the window (to vent it outdoors), you won’t want to move the unit. Not to mention that they typically weigh 50 to 80 pounds, sometimes more.

While they do have wheels, portable air conditioners can be difficult to roll on carpets and over raised thresholds between rooms.

They also need their space. The hose is 5 to 7 feet long, and the air conditioner must be positioned away from any walls or furniture that may block its airflow.

“There’s a consumer learning curve,” says Thomas Kelly, senior marketing director at GE Appliances. “Some consumers don’t realize that they have to vent the portable AC to the outdoors.”

While window air conditioners have been subject to federal energy efficiency standards for more than 25 years, portable air conditioners have not. In 2016, the Department of Energy set new efficiency standards for them, but they don’t go into effect until 2025. Many manufacturers have already been producing units that meet those standards.

The result? When you’re shopping, you might see portable air conditioners that list a Btu rating according to the new standard—and some that list an inflated or misleading Btu rating. (Btu, or British thermal units, measures cooling capacity.) And during this transition, you might see two Btu ratings listed on the same box.

For example, a portable model that was formerly listed at 14,000 Btu (called the ASHRAE rating, from the American Society of Heating, Refrigerating and Air-Conditioning Engineers) may now carry a DOE rating of 10,000 Btu.

But even with this change, you still can’t compare a portable air conditioner with a window unit regarding Btu. “The DOE’s test conditions for window ACs are more demanding than those for portable ACs,” says Joanna Mauer, who tracks energy efficiency for the Appliance Standards Awareness Project, a group that advocates for efficiency standards. “A window AC rated at 6,000 Btu will therefore deliver more cooling than a portable AC unit rated at 6,000 Btu.”

At Consumer Reports we test each air conditioner in a room appropriate for its claimed size. We’ve adjusted our testing according to the DOE’s new standard. “We now go by the DOE’s Btu rating,” Regan says. “That means we are testing each unit in a room more appropriate to its cooling capacity.”

In our air conditioner tests, we measure how long it takes a portable air conditioner to lower the temperature in the test chamber from 90° F to 85° F. It takes at least 20 minutes—and often much longer. By comparison, the best window air conditioners can cool the room by 10° F in about 15 minutes or less.

Install it right. All portable air conditioners come with a kit that you install in a window. It consists of a plastic panel with connections for the exhaust hose, and can be installed horizontally in a double-hung window or vertically in a sliding window. Make sure all your connections are tight, and seal any air gaps.

Get a ceiling fan. Create a breeze by running a ceiling fan. It will make the room feel cooler.

Block the sun. Close the curtains and shades to keep the sun from overheating your room.

None of the portable ACs in our tests make our list of recommended air conditioners, but if you have no alternative, consider one of the five highest-performing models below.


Mary H.J. Farrell

Mary H.J. Farrell is a senior editor at Consumer Reports whose real passion is for cooking and all that entails. She has expanded CR’s cookware category to include not only more pots and pans but also other essentials like stand mixer attachments, sheet pans, and vacuum sealers. Mary also covers vacuums but finds cooking way more fun than cleaning. Since the mid-1990s, Mary has held senior positions at People.com, MSNBC, and Ladies’ Home Journal. One of her earliest jobs was at Good Housekeeping.

All About Types of Chargers for Electric Vehicles

In recent years, any car enthusiast who follows technical innovations should have noticed the growth in popularity and prevalence of electric vehicles and hybrids. This is facilitated by an increase in mileage between charges and a decrease in the cost of “electric” vehicles. While car manufacturers did not have time to agree, they made a fairly large number of types of connectors and charging stations. In this material, we propose to understand the variety of charging stations for electric vehicles, types of connectors and charging standards. Go!

Electric vehicles are powered by direct voltage, however, they are charged from sources with direct and alternating current. DC sources are capable of charging an electric car quickly, are heavy duty and are usually installed at gas stations. These chargers use CHAdeMO and/or CCS Combo connectors.

When charging electric vehicles from an AC network (such networks are available to the public), converters, AC to DC, are installed in the car, which significantly limits the charging power (maximum 7.4 kW when connected to a 220V network and 22kW when connected to a 380V network), just such charging stations and sold for private use. They typically use Type 1 and Type 2 connectors.

Types of sockets in electric vehicles

Let’s break down and learn more about each type of socket used for charging electric vehicles:

Type 1 and Type 2 connectors, from left to right respectively

Type 1 / J1772

The most common type among electric vehicles in Belarus, due to the fact that the main market supplying Belarus with used electric vehicles is the USA. This type of connector allows you to charge a car from a single-phase 220 V network. The maximum charging power is 7.4 kW.

Type 2 (Mennekes)

European connector, most suitable for use in private homes or public parking lots. Allows connecting to a three-phase network and charging a car with a power of up to 22 kW. A charging station with such a connector can be considered universal, by connecting a cable with Type 2 – Type 2 connectors to charge European electric cars, and by changing the cable with Type 2 – Type 1 connectors, charge cars brought from the USA, only the charge power will decrease to 7.4 kW.

A man holds CHAdeMO, CCS Combo 2 and Type 2 connectors for charging electric vehicles

CHAdeMO

2-pin DC connector. Can be used to charge most Japanese, American and some European electric vehicles. Designed for use at high-power charging stations powered by direct current in Mode 4 mode, allowing you to charge the battery of an electric vehicle up to 80% within 30 minutes (at a power of 50 kW). Designed for a maximum voltage of 500 V and a current of 125 A with a power of up to 62.5 kW.

CCS Combo (Type 1/Type 2)

Combined connector type that allows you to use both slow and fast chargers. The operation of the connector is possible thanks to inverter technology that converts direct current to alternating current. Vehicles with this type of connection can accept charging speeds up to the fastest charging possible. The CCS Combo connectors are not the same for Europe and the USA and Japan: for Europe the Mennekes compatible Combo 2 is offered, and for the USA and Japan Combo 1 which is linked to J1772. Charging with the CSS Combo is rated for 200-500V at 200A and 100kW. CSS Combo 2 is currently the most common connector type in fast chargers in Europe along with CHAdeMO.

GB/T

This standard is specific to Chinese vehicles and is often referred to simply as GBT. Visually resembles the European Mennekes, but is not technically comparable. There are two types of connectors for this standard, one for slow charging and the other for fast charging.

Now, let’s take a closer look at what you can charge an electric car from.

Types of charging stations

There are four classifications of chargers:

Mode 1 . Slow charging or, to put it simply, a regular 220 volt outlet. This type of charging is very slow, charging is capable of charging an electric car at a rate of 2 kW / h, i.e. if you have a car with a 20 kW battery, then up to 80% charge you will need 10 hours, up to 100% 12 hours (the last 20% of the car takes a particularly long time to charge, this is done to save the battery). But there is one condition – grounding must be connected in the outlet, most often “zeroing” is connected with which the electric car will not be charged !

Mode 2 . Standard AC charging station, which is used both in everyday life and at electric gas stations. Suitable for almost any type of electric vehicle, with a traditional connector and protection system inside the cable. Standard electric car charging time – up to 8 hours

Mode 3 . The most powerful type of charging stations, when charging with alternating current. This is the best type of charger for private use. Chargers are equipped with a cable or a Type 1 connector – for a single-phase network (power up to 7.4 kW) or Type 2 – for a three-phase network (power up to 22 kW)

Mode 4 . These are the most powerful charging stations with a capacity of 50 to 250 kW, capable of charging any car in 15-30 minutes. Which are installed at gas stations.

Charging stations Mode 1, Mode 2 and Mode 3 are available for home (domestic) use. A large selection of chargers for electric vehicles is presented in our catalog.

In this article, we briefly described the basics, without which the full operation of electric vehicles is impossible. In the second article, we will describe how to install your personal charging station.

What is the difference between DC stations and AC stations for charging an electric car?

When you understand EV charging terminology, you will likely come across the abbreviations AC or DC, and the more common terms “fast” and “slow” charging are also commonly used. Let’s see what it is and how they differ.

Let’s start with a school physics course:

  • AC (Alternate Current) – this abbreviation stands for alternating current;
  • DC (Direct Current) – direct current.

The household and industrial outlets you encounter daily supply alternating current. You meet a constant in everyday life when it comes to personal household appliances, in which there are AAA batteries and accumulators and other common ones.

An electric vehicle battery is made up of many interconnected cells, often reminiscent of consumer electronics batteries, that are charged with DC only and therefore feed back DC. When charging, a rectifier is used that converts alternating current to direct current. All electric vehicles have such a device “on board”.

But due to the dimensions of these converters (devices grow in size and weight with power), it makes no sense to try to fit a massive device on the chassis of an electric car that can pass and convert enough power to charge in an hour, or even more so in 10-20 minutes. Therefore, rectifiers installed directly in an electric vehicle or “on-board chargers” have a limited capacity, while powerful and massive converters remain “overboard”.

Slow AC chargers:

AC or slow chargers are just “smart” AC switches that feed available AC (without affecting or converting it in any way) via cable to an electric vehicle on an on-board charger. They control the charging process through special signal wires and implement the following important functions:

  • Coordination of the charging process with an electric vehicle, only after which the current is turned on, and at the end of charging it is turned off;

  • Power control – indicates the maximum allowable current to the electric vehicle and controls it so that the electric vehicle does not overload the network and does not “cut down” the machines;

  • Safety – is responsible for the emergency shutdown of current, in case of detection of its leaks on the charging cable or station body, as well as in the electric vehicle itself. Tracking the quality and performance of grounding.

Advanced AC charging stations often have additional features: kilowatt counters, delay timers, intelligent load management functions (dynamic balancing), connection to cloud management systems, monitoring, and many others.

DC Fast Chargers:

Powerful AC converters (40-200kW or more) stay on the ground and connect directly to the battery through special connectors that include power and signal cables. What is the DC station responsible for?

  • Coordinates the charging process with an electric car and only after coordination turns on the current, turns it off when finished;

  • Limits and regulates the current on commands from the BMS (Battery Management System – battery management system), in order to carry out the charging process without overloads and overheating;

  • Monitors the safety of the charging process – turns off the current in case of current leakage on the charging cable or station body, in the electric vehicle itself, grounding problems;

  • Monitors the temperature of connectors to avoid overheating.