How To Choose An Energy-efficient And Cost-effective Study Table Lamp?

When selecting a study table lamp, opt for products with energy-efficient bulbs to reduce long-term usage costs while meeting lighting requirements for studying and saving expenses.

You need to purchase a table lamp for your study desk, aiming to ensure adequate lighting while minimizing costs. Which of the following table lamps is the best choice?

A. A table lamp using a 55-watt incandescent bulb, which is dim and energy-intensive

B. A table lamp equipped with a 32-watt fluorescent bulb, which has slow startup and a short lifespan

C. A table lamp using a 10-watt LED bulb, which is energy-efficient and affordably priced

D. A table lamp with a 42-watt halogen bulb, which emits harsh light and is energy-intensive

Answer

Explanation

When selecting an energy-efficient and cost-effective table lamp for a study desk, the correct approach is to choose a product with high energy efficiency, reasonable pricing, and a long service life. This ensures adequate lighting for extended study sessions while minimizing long-term usage costs. An incorrect approach would be to focus solely on price while ignoring energy consumption and performance, or to select high-energy-consuming products, which ultimately lead to increased usage costs.

Option A: A table lamp using a 55-watt incandescent bulb, which is dim and energy-intensive. Incandescent bulbs have low luminous efficiency, and a 55-watt power rating during study sessions not only fails to provide adequate brightness but also consumes a significant amount of electricity. Using a table lamp with incandescent bulbs for extended periods will significantly increase monthly electricity bills. Additionally, their low brightness may impair learning effectiveness and cause eye strain, making them an unsuitable choice from both economic and practical perspectives.

Option B: A table lamp equipped with a 32-watt fluorescent bulb, which has slow startup times and a short lifespan. Fluorescent bulbs require a certain amount of time to warm up before reaching full brightness, making them inconvenient for use in situations where immediate lighting is needed. Additionally, its lifespan is relatively short, and frequent bulb replacements not only increase purchase costs but also cause inconvenience. Furthermore, the 32-watt power consumption, even when used long-term, still consumes more electricity compared to energy-efficient bulbs, failing to achieve both cost-effectiveness and energy savings.

Option C: 10-watt LED bulbs, energy-efficient and affordably priced table lamps. 10-watt LED bulbs have high luminous efficiency, providing stable and bright light to meet the need for clear illumination during study. Their energy consumption is only a fraction of that of traditional incandescent bulbs, resulting in significant electricity savings over time. Additionally, as technology advances, LED bulbs have become more affordable, offering high cost-effectiveness. They ensure adequate lighting while reducing usage costs, making them an excellent choice for both economy and energy efficiency.

Option D: Install a 42-watt halogen bulb table lamp, which emits harsh light and has high energy consumption. Halogen bulbs emit harsh light, and prolonged exposure to such light can harm the eyes and impair vision health. The high power of 42 watts results in significant energy consumption, leading to higher electricity bills when used for extended periods during daily study sessions. Additionally, halogen bulbs generate significant heat, posing safety hazards, and may incur increased maintenance costs in the future due to heat dissipation issues, failing to meet the criteria for energy efficiency and cost-effectiveness.