Engineering College

Mixing CFC-12 and HFC-134a in the same system will: For hint, click link below: Click Here A. Result in refrigerant cros5-contamination B. Improve cooling performance C. Lower system operating pressure
D. Cause no problems

Answers

Answer 1

Mixing CFC-12 and HFC-134a in the same system will result in refrigerant cross-contamination.

When CFC-12 (chlorofluorocarbon-12) and HFC-134a (hydrofluorocarbon-134a) refrigerants are mixed in the same system, it leads to refrigerant cross-contamination. CFC-12 is an older refrigerant that has been phased out due to its harmful effects on the ozone layer, while HFC-134a is a more environmentally friendly alternative commonly used today. These two refrigerants have different properties and chemical compositions, which makes them incompatible for mixing.

The cross-contamination of CFC-12 and HFC-134a can cause several issues. Firstly, it can result in the degradation of system performance and efficiency. The mixed refrigerants may have different boiling points, pressures, and heat transfer characteristics, leading to improper operation of the cooling system. Secondly, the chemical reactions between the two refrigerants can produce byproducts that are potentially harmful or corrosive to the system components, such as seals, hoses, and compressor.

Therefore, it is crucial to avoid mixing CFC-12 and HFC-134a in the same refrigeration or air conditioning system. Proper handling and disposal procedures should be followed when transitioning from CFC-12 to HFC-134a or any other alternative refrigerant. This ensures the safe and effective operation of the cooling system while minimizing environmental impact.

To learn more about refrigerant  Click Here: brainly.com/question/28265596

#SPJ11

Related Questions

Windows cleaners maintain the ____ for more effective system operation.

Answers

Windows cleaners maintain the registry for more effective system operation.

Windows cleaners are software tools designed to optimize and clean up the Windows operating system. One of the key areas they focus on is the Windows registry. The registry is a hierarchical database that stores important configuration settings, options, and preferences for the operating system and installed applications. Over time, the registry can become cluttered with outdated entries, invalid references, and unnecessary data. This accumulation of unnecessary information can slow down system performance and cause various issues.

Windows cleaners help maintain the registry by scanning it for errors, invalid entries, and redundant data. They then remove or fix these issues, resulting in a more streamlined and efficient registry. By keeping the registry clean, Windows cleaners can improve system responsiveness, reduce startup and shutdown times, and enhance overall system stability. Additionally, a well-maintained registry can minimize the chances of software conflicts and crashes.

Hence, by focusing on the registry, Windows cleaners play a vital role in optimizing system performance and ensuring smooth operation. Regularly using a reliable Windows cleaner can help maintain a healthy registry and contribute to a more effective and efficient Windows experience.

To learn more about Windows  Click Here: brainly.com/question/33363536

#SPJ11

In context to CFGs if we remove the Nullable variables, eliminate the unit productions, and eliminate products which yield no terminals then we are: O Removing useless symbols O All of these are correct O Simplifying the CFG O Performing a Reduction

Answers

In context to CFGs if we remove the Nullable variables, eliminate the unit productions, and eliminate products which yield no terminals then we are simplifying the CFG.

CFG stands for Context-Free Grammar which is a formal grammar that defines the syntax or structure of a language. It is also known as Type 2 Grammar of Chomsky's Hierarchy. The CFG is a set of production rules that describe the set of all possible strings in a language. The production rules contain the non-terminal symbols and terminal symbols, and it describes how the non-terminal symbols can be replaced by terminal symbols. The CFG helps in describing the structure of programming languages, compilers, and natural languages. If we remove the Nullable variables, eliminate the unit productions, and eliminate products that yield no terminals, then we are simplifying the CFG. These are the methods used for simplifying the CFG by removing unwanted symbols and making the grammar more concise. Removing the Nullable variables means the variables that can produce empty or Null strings can be removed from the production rules. Eliminating the unit productions means the rules that contain only one non-terminal symbol can be removed. Eliminating the products that yield no terminals means the rules that do not generate any terminal symbols can be removed. So, these are the methods used for simplifying the CFG.

Learn more about Context-Free Grammar:

https://brainly.com/question/30764581

#SPJ11

The bore of a shotgun barrel is made for only

Answers

The bore of a shotgun barrel is made for only one purpose: to provide a smooth and consistent pathway for the shot or slug to travel towards the target.

The bore refers to the inner diameter of the barrel, which determines the size and shape of the projectiles that can be fired from the shotgun.

Shotgun bores are measured in terms of gauge, with the most common gauges being 12, 20, and .410. The gauge number corresponds to the number of lead balls of bore diameter that would make one pound. For example, a 12-gauge shotgun has a bore diameter that allows 1/12th of a pound of lead balls to fit perfectly inside the barrel.

The bore diameter is essential for achieving the desired performance and effectiveness of the shotgun. It affects the spread of the shot pattern, the range, and the recoil experienced by the shooter. Different bores are suitable for different purposes, such as bird hunting, clay target shooting, or self-defense.

Overall, the bore of a shotgun barrel is specifically designed to optimize the ballistic characteristics and performance of the firearm when firing shot or slugs.

Learn more about shotgun barrel

https://brainly.com/question/14309030

#SPJ11

the process of examining an adverse event or incident and determining whether it constitutes an actual disaster is known as _____.

Answers

The process of examining an adverse event or incident and determining whether it constitutes an actual disaster is known as disaster assessment.

Disaster assessment refers to the process of evaluating and analyzing the impact, extent, and severity of a disaster or adverse event. It involves collecting data, conducting surveys, and performing on-site evaluations to assess the damage, needs, and vulnerabilities of the affected area or population. The main objectives of disaster assessment are to determine the magnitude of the disaster, identify the immediate and long-term needs of the affected communities, prioritize response and recovery efforts, and provide accurate information for decision-making and resource allocation. The assessment covers various aspects such as infrastructure damage, casualties, health and safety risks, availability of basic services, and socioeconomic impacts. The information gathered during the assessment helps authorities, emergency responders, and humanitarian organizations to develop effective strategies and interventions to support the affected communities and facilitate the recovery process.

To know more about Disaster assessment

brainly.com/question/28398239

#SPJ11

Other Questions
The fresh newly cratered surfaces of Icey satellites of Jovian planets. the first thing to do if your accelerator sticks is to... 70-2 Is =8 an eigenvalue of 47 7? If so, find one corresponding eigenvector. -32 4 Select the correct choice below and, if necessary, fill in the answer box within your choice. 70-2 Yes, =8 is an eigenvalue of 47 7 One corresponding eigenvector is A. -32 4 (Type a vector or list of vectors. Type an integer or simplified fraction for each matrix element.) 70-2 OB. No, =8 is not an eigenvalue of 47 7 -32 4 You invest in the stock market initially for $160,000... in 5 years the value of your investment has grown to $175,000... What is the rate of return on your equities? (What return annually will be earned on the investment?) And what is the MSFT Excel formula?2. You save $1,500 annually, with a goal to reach $20,000. You earn an 8% interest on savings, how long is required to save before hitting $20,000? And what is the MSFT Excel Formula?3. You decide to buy a home, the cost of the house (amount of the loan) is $250,000. The interest rate on the loan is 6% (compounded monthly) while the loan is for 30 years. What is the monthly house payment? And what is the MSFT Excel Formula? Unhappy customers, on average, tell how many other consumers about their dissatisfaction with the service or product? 1) 17 2) 15 3) 11 4) 8 A job expands to fill the time available to accomplish the task, such as finding and purchasing a product, is the definition of which term? 1) Pareto's Principle 2) Parkinson's Principle 3) Parkinson's Law 4) Pareto's Law shaw and mckay explained crime and delinquency within the context of the phase of the business cycle at which the economy is at full employment An adjusting entry to show that a prepaid expense has been used or has expired would include which of the following?o A debit to a liability accounto A credit to a liability accounto A debit to an asset accounto A credit to an asset account The line AB passes through the points A(2, -1) and (6, k). The gradient of AB is 5. Work out the value of k. 1. Given the current economic situation in South Africa and the high unemployment rate: should the current labour force prioritise job satisfaction OR should people just be grateful that they are employed.Choose the statement that you agree with and support your answer by outlining different types of job satisfaction and why you feel like they are important or not important.2. Trust is one of the most important components in the work relationship especially between a manager and an employee. However, some managers tend to abuse this trust because employees cannot do anything about broken promises. Identify THREE (3) types of trust and explain why they are important in the organisation. Your company seeks to take over Good Deal Company. Your companys offer for Good Deal is $5,000,000 in cash upon signing the agreement followed by 10 annual payments of $200,000 starting one year later. The time value of money is 10%. Find the present worth of your companys offer and perform a sensitivity analysis - i.e. find how sensitive the value of the present worth is to changes in the initial cash upon signing, annual payment amount, number of payments and rate of return. Describe the characteristics of monopolistic competition and how that market structure differs from oligopolies. Use full sentences in your answer.(a) (b) Why would accounting profit be greater than or equal to economic profit? japan the european union canada and mexico have flexible exchange rates In the diagram below, how many different paths from A to B are possible if you can only move forward and down? A 4 B 3. A band consisting of 3 musicians must include at least 2 guitar players. If 7 pianists and 5 guitar players are trying out for the band, then the maximum number of ways that the band can be selected is 50 +503 C 7C1+5C3 C 7C15C17C2+7C3 D5C+50 +5Co b) V = (y x, z + y, x 3z) Compute F(V) S(0,3) One of your customers is delinquent on his accounts payable balance. You've mutually agreed to a repayment schedule of $750 per month. You will charge 1.50 percent per month interest on the overdue balance. If the current balance is $14,000, how long will it take for the account to be paid off? (Do not round intermediate calculations and round your final answer to 2 decimal places. which person best illustrates sternberg's concept of analytical intelligence? Mitsubishi Heavy Industry (MHI) in New Jersey sold a ship to Princess Cruise Company (PCC) in Bremen. PCC owes MHI 500 million euros in one year. The current spot rate is 1.18 $/ and the one-year forward rate is 1.20 $/. The annual interest rate is 3% in Europe and 5% in the U.S. MHI can also buy a one-year call option on euros at the strike price (E) of 1.21 $/ for a premium of 0.015 $ per euro. MHI can also buy a put option on euros at same strike price (E) of 1.21 $/ for a premium of 0.042 $ per euro. You are the treasurer of MHI, so you have an account receivable.a) Compute the future dollar revenue of meeting this collection using the money market hedge and the forward hedge.b) Calculate the minimum amount to be collected hedging with options.c) Assuming that the forward exchange rate is the best predictor of the future spot rate, compute the expected future dollar revenue of meeting this collection when the option hedge is used.d) At what future spot rate do you think MHI may be indifferent betweenthe option and M-M hedge? Retailing plays a very important role in most marketing channels. Major store retailers can be classified by the length and breadth of their product assortments. Identify and explain five (5) types of retailers based on product line classifications. Please provide one example for each type of retailers. 1. The Consumer Price Index was 494 in year 1 and 544 in year 2. Calculate the rate of inflation in year 2. Show work.2. Calculate the unemployment rate using the following data. Show work.Total population: 400 million, Labor force: 200 million, Employed: 184 million